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Finding the Fourth Proportional to 657,200.35, 985,800.53 and 432,814.15

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Solution

The fourth proportional to 657,200.35, 985,800.53 and 432,814.15 is: 649,221.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,200.35 : 985,800.53 = 432,814.15 : x
  2. Step 2: Convert to fraction form
    657,200.35/985,800.53 = 432,814.15/x
  3. Step 3: Cross multiply
    657,200.35x = 985,800.53 × 432,814.15
  4. Step 4: Simplify right side
    657,200.35x = 426,668,416,297.43
  5. Step 5: Solve for x
    x = 426,668,416,297.43/657,200.35
  6. Step 6: Final answer
    x = 649,221.23

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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.