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Finding the Fourth Proportional to 124,943.92, 187,428.12 and 40,700.32

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Solution

The fourth proportional to 124,943.92, 187,428.12 and 40,700.32 is: 61,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,943.92 : 187,428.12 = 40,700.32 : x
  2. Step 2: Convert to fraction form
    124,943.92/187,428.12 = 40,700.32/x
  3. Step 3: Cross multiply
    124,943.92x = 187,428.12 × 40,700.32
  4. Step 4: Simplify right side
    124,943.92x = 7,628,384,461.00
  5. Step 5: Solve for x
    x = 7,628,384,461.00/124,943.92
  6. Step 6: Final answer
    x = 61,054.47

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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.