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Finding the Fourth Proportional to 106,437.92, 159,656.88 and 43,292.40

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Solution

The fourth proportional to 106,437.92, 159,656.88 and 43,292.40 is: 64,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,437.92 : 159,656.88 = 43,292.40 : x
  2. Step 2: Convert to fraction form
    106,437.92/159,656.88 = 43,292.40/x
  3. Step 3: Cross multiply
    106,437.92x = 159,656.88 × 43,292.40
  4. Step 4: Simplify right side
    106,437.92x = 6,911,929,220.80
  5. Step 5: Solve for x
    x = 6,911,929,220.80/106,437.92
  6. Step 6: Final answer
    x = 64,938.60

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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.