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Finding the Fourth Proportional to 93,711.87, 129,343.14 and 64,681.00

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Solution

The fourth proportional to 93,711.87, 129,343.14 and 64,681.00 is: 89,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,711.87 : 129,343.14 = 64,681.00 : x
  2. Step 2: Convert to fraction form
    93,711.87/129,343.14 = 64,681.00/x
  3. Step 3: Cross multiply
    93,711.87x = 129,343.14 × 64,681.00
  4. Step 4: Simplify right side
    93,711.87x = 8,366,043,314.98
  5. Step 5: Solve for x
    x = 8,366,043,314.98/93,711.87
  6. Step 6: Final answer
    x = 89,274.10

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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.