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Finding the Fourth Proportional to 93,681.25, 129,276.87 and 53,407.98

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Solution

The fourth proportional to 93,681.25, 129,276.87 and 53,407.98 is: 73,701.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,681.25 : 129,276.87 = 53,407.98 : x
  2. Step 2: Convert to fraction form
    93,681.25/129,276.87 = 53,407.98/x
  3. Step 3: Cross multiply
    93,681.25x = 129,276.87 × 53,407.98
  4. Step 4: Simplify right side
    93,681.25x = 6,904,416,487.42
  5. Step 5: Solve for x
    x = 6,904,416,487.42/93,681.25
  6. Step 6: Final answer
    x = 73,701.16

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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.