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Finding the Fourth Proportional to 873,807.31, 1,205,777.22 and 486,593.47

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Solution

The fourth proportional to 873,807.31, 1,205,777.22 and 486,593.47 is: 671,456.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,807.31 : 1,205,777.22 = 486,593.47 : x
  2. Step 2: Convert to fraction form
    873,807.31/1,205,777.22 = 486,593.47/x
  3. Step 3: Cross multiply
    873,807.31x = 1,205,777.22 × 486,593.47
  4. Step 4: Simplify right side
    873,807.31x = 586,723,321,526.75
  5. Step 5: Solve for x
    x = 586,723,321,526.75/873,807.31
  6. Step 6: Final answer
    x = 671,456.18

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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.