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Finding the Fourth Proportional to 93,689.48, 129,290.42 and 51,247.50

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Solution

The fourth proportional to 93,689.48, 129,290.42 and 51,247.50 is: 70,720.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,689.48 : 129,290.42 = 51,247.50 : x
  2. Step 2: Convert to fraction form
    93,689.48/129,290.42 = 51,247.50/x
  3. Step 3: Cross multiply
    93,689.48x = 129,290.42 × 51,247.50
  4. Step 4: Simplify right side
    93,689.48x = 6,625,810,542.71
  5. Step 5: Solve for x
    x = 6,625,810,542.71/93,689.48
  6. Step 6: Final answer
    x = 70,720.97

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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.