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Finding the Fourth Proportional to 86,937.69, 130,237.32 and 64,099.92

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Solution

The fourth proportional to 86,937.69, 130,237.32 and 64,099.92 is: 96,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,937.69 : 130,237.32 = 64,099.92 : x
  2. Step 2: Convert to fraction form
    86,937.69/130,237.32 = 64,099.92/x
  3. Step 3: Cross multiply
    86,937.69x = 130,237.32 × 64,099.92
  4. Step 4: Simplify right side
    86,937.69x = 8,348,201,793.01
  5. Step 5: Solve for x
    x = 8,348,201,793.01/86,937.69
  6. Step 6: Final answer
    x = 96,025.12

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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.