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Finding the Fourth Proportional to 106,616.32, 147,130.74 and 58,869.76

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Solution

The fourth proportional to 106,616.32, 147,130.74 and 58,869.76 is: 81,240.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,616.32 : 147,130.74 = 58,869.76 : x
  2. Step 2: Convert to fraction form
    106,616.32/147,130.74 = 58,869.76/x
  3. Step 3: Cross multiply
    106,616.32x = 147,130.74 × 58,869.76
  4. Step 4: Simplify right side
    106,616.32x = 8,661,551,352.42
  5. Step 5: Solve for x
    x = 8,661,551,352.42/106,616.32
  6. Step 6: Final answer
    x = 81,240.39

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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.