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Finding the Fourth Proportional to 582,542.16, 804,155.94 and 391,666.20

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Solution

The fourth proportional to 582,542.16, 804,155.94 and 391,666.20 is: 540,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,542.16 : 804,155.94 = 391,666.20 : x
  2. Step 2: Convert to fraction form
    582,542.16/804,155.94 = 391,666.20/x
  3. Step 3: Cross multiply
    582,542.16x = 804,155.94 × 391,666.20
  4. Step 4: Simplify right side
    582,542.16x = 314,960,701,227.23
  5. Step 5: Solve for x
    x = 314,960,701,227.23/582,542.16
  6. Step 6: Final answer
    x = 540,665.93

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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.