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Finding the Fourth Proportional to 116,702.40, 175,053.60 and 72,184.80

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Solution

The fourth proportional to 116,702.40, 175,053.60 and 72,184.80 is: 108,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,702.40 : 175,053.60 = 72,184.80 : x
  2. Step 2: Convert to fraction form
    116,702.40/175,053.60 = 72,184.80/x
  3. Step 3: Cross multiply
    116,702.40x = 175,053.60 × 72,184.80
  4. Step 4: Simplify right side
    116,702.40x = 12,636,209,105.28
  5. Step 5: Solve for x
    x = 12,636,209,105.28/116,702.40
  6. Step 6: Final answer
    x = 108,277.20

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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.