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Finding the Fourth Proportional to 107,212.64, 147,960.15 and 61,898.91

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Solution

The fourth proportional to 107,212.64, 147,960.15 and 61,898.91 is: 85,424.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,212.64 : 147,960.15 = 61,898.91 : x
  2. Step 2: Convert to fraction form
    107,212.64/147,960.15 = 61,898.91/x
  3. Step 3: Cross multiply
    107,212.64x = 147,960.15 × 61,898.91
  4. Step 4: Simplify right side
    107,212.64x = 9,158,572,008.44
  5. Step 5: Solve for x
    x = 9,158,572,008.44/107,212.64
  6. Step 6: Final answer
    x = 85,424.37

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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.