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Finding the Fourth Proportional to 158,124.60, 236,721.78 and 98,780.40

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Solution

The fourth proportional to 158,124.60, 236,721.78 and 98,780.40 is: 147,880.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,124.60 : 236,721.78 = 98,780.40 : x
  2. Step 2: Convert to fraction form
    158,124.60/236,721.78 = 98,780.40/x
  3. Step 3: Cross multiply
    158,124.60x = 236,721.78 × 98,780.40
  4. Step 4: Simplify right side
    158,124.60x = 23,383,472,117.11
  5. Step 5: Solve for x
    x = 23,383,472,117.11/158,124.60
  6. Step 6: Final answer
    x = 147,880.04

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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.