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Finding the Fourth Proportional to 93,060.91, 128,496.14 and 71,516.53

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Solution

The fourth proportional to 93,060.91, 128,496.14 and 71,516.53 is: 98,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,060.91 : 128,496.14 = 71,516.53 : x
  2. Step 2: Convert to fraction form
    93,060.91/128,496.14 = 71,516.53/x
  3. Step 3: Cross multiply
    93,060.91x = 128,496.14 × 71,516.53
  4. Step 4: Simplify right side
    93,060.91x = 9,189,598,051.19
  5. Step 5: Solve for x
    x = 9,189,598,051.19/93,060.91
  6. Step 6: Final answer
    x = 98,748.21

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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.