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Finding the Fourth Proportional to 619,294.80, 854,705.92 and 364,669.68

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Solution

The fourth proportional to 619,294.80, 854,705.92 and 364,669.68 is: 503,290.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,294.80 : 854,705.92 = 364,669.68 : x
  2. Step 2: Convert to fraction form
    619,294.80/854,705.92 = 364,669.68/x
  3. Step 3: Cross multiply
    619,294.80x = 854,705.92 × 364,669.68
  4. Step 4: Simplify right side
    619,294.80x = 311,685,334,340.51
  5. Step 5: Solve for x
    x = 311,685,334,340.51/619,294.80
  6. Step 6: Final answer
    x = 503,290.73

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Double scale
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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.