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Finding the Fourth Proportional to 122,507.71, 183,515.52 and 55,856.15

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Solution

The fourth proportional to 122,507.71, 183,515.52 and 55,856.15 is: 83,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,507.71 : 183,515.52 = 55,856.15 : x
  2. Step 2: Convert to fraction form
    122,507.71/183,515.52 = 55,856.15/x
  3. Step 3: Cross multiply
    122,507.71x = 183,515.52 × 55,856.15
  4. Step 4: Simplify right side
    122,507.71x = 10,250,470,412.45
  5. Step 5: Solve for x
    x = 10,250,470,412.45/122,507.71
  6. Step 6: Final answer
    x = 83,672.04

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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.