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Finding the Fourth Proportional to 586,122.20, 807,400.86 and 499,800.32

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Solution

The fourth proportional to 586,122.20, 807,400.86 and 499,800.32 is: 688,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,122.20 : 807,400.86 = 499,800.32 : x
  2. Step 2: Convert to fraction form
    586,122.20/807,400.86 = 499,800.32/x
  3. Step 3: Cross multiply
    586,122.20x = 807,400.86 × 499,800.32
  4. Step 4: Simplify right side
    586,122.20x = 403,539,208,196.28
  5. Step 5: Solve for x
    x = 403,539,208,196.28/586,122.20
  6. Step 6: Final answer
    x = 688,489.89

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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.