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Finding the Fourth Proportional to 118,112.40, 176,909.40 and 102,560.40

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Solution

The fourth proportional to 118,112.40, 176,909.40 and 102,560.40 is: 153,615.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,112.40 : 176,909.40 = 102,560.40 : x
  2. Step 2: Convert to fraction form
    118,112.40/176,909.40 = 102,560.40/x
  3. Step 3: Cross multiply
    118,112.40x = 176,909.40 × 102,560.40
  4. Step 4: Simplify right side
    118,112.40x = 18,143,898,827.76
  5. Step 5: Solve for x
    x = 18,143,898,827.76/118,112.40
  6. Step 6: Final answer
    x = 153,615.53

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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.