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Finding the Fourth Proportional to 611,566.60, 917,349.90 and 605,661.70

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Solution

The fourth proportional to 611,566.60, 917,349.90 and 605,661.70 is: 908,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,566.60 : 917,349.90 = 605,661.70 : x
  2. Step 2: Convert to fraction form
    611,566.60/917,349.90 = 605,661.70/x
  3. Step 3: Cross multiply
    611,566.60x = 917,349.90 × 605,661.70
  4. Step 4: Simplify right side
    611,566.60x = 555,603,699,928.83
  5. Step 5: Solve for x
    x = 555,603,699,928.83/611,566.60
  6. Step 6: Final answer
    x = 908,492.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.