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Finding the Fourth Proportional to 619,368.57, 854,085.59 and 437,997.69

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Solution

The fourth proportional to 619,368.57, 854,085.59 and 437,997.69 is: 603,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,368.57 : 854,085.59 = 437,997.69 : x
  2. Step 2: Convert to fraction form
    619,368.57/854,085.59 = 437,997.69/x
  3. Step 3: Cross multiply
    619,368.57x = 854,085.59 × 437,997.69
  4. Step 4: Simplify right side
    619,368.57x = 374,087,513,292.30
  5. Step 5: Solve for x
    x = 374,087,513,292.30/619,368.57
  6. Step 6: Final answer
    x = 603,982.07

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Half scale
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Double scale
Find fourth proportional to 619,369.57, 854,086.96 and 437,998.69
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.