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Finding the Fourth Proportional to 64,707.96, 97,061.62 and 55,916.12

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Solution

The fourth proportional to 64,707.96, 97,061.62 and 55,916.12 is: 83,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,707.96 : 97,061.62 = 55,916.12 : x
  2. Step 2: Convert to fraction form
    64,707.96/97,061.62 = 55,916.12/x
  3. Step 3: Cross multiply
    64,707.96x = 97,061.62 × 55,916.12
  4. Step 4: Simplify right side
    64,707.96x = 5,427,309,191.31
  5. Step 5: Solve for x
    x = 5,427,309,191.31/64,707.96
  6. Step 6: Final answer
    x = 83,873.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.