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Finding the Fourth Proportional to 93,978.04, 129,695.70 and 62,091.08

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Solution

The fourth proportional to 93,978.04, 129,695.70 and 62,091.08 is: 85,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,978.04 : 129,695.70 = 62,091.08 : x
  2. Step 2: Convert to fraction form
    93,978.04/129,695.70 = 62,091.08/x
  3. Step 3: Cross multiply
    93,978.04x = 129,695.70 × 62,091.08
  4. Step 4: Simplify right side
    93,978.04x = 8,052,946,084.36
  5. Step 5: Solve for x
    x = 8,052,946,084.36/93,978.04
  6. Step 6: Final answer
    x = 85,689.66

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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.