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Finding the Fourth Proportional to 71,406.16, 98,541.36 and 39,574.98

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Solution

The fourth proportional to 71,406.16, 98,541.36 and 39,574.98 is: 54,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,406.16 : 98,541.36 = 39,574.98 : x
  2. Step 2: Convert to fraction form
    71,406.16/98,541.36 = 39,574.98/x
  3. Step 3: Cross multiply
    71,406.16x = 98,541.36 × 39,574.98
  4. Step 4: Simplify right side
    71,406.16x = 3,899,772,351.17
  5. Step 5: Solve for x
    x = 3,899,772,351.17/71,406.16
  6. Step 6: Final answer
    x = 54,613.95

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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.