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Finding the Fourth Proportional to 417,440.70, 626,127.84 and 117,909.18

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Solution

The fourth proportional to 417,440.70, 626,127.84 and 117,909.18 is: 176,854.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,440.70 : 626,127.84 = 117,909.18 : x
  2. Step 2: Convert to fraction form
    417,440.70/626,127.84 = 117,909.18/x
  3. Step 3: Cross multiply
    417,440.70x = 626,127.84 × 117,909.18
  4. Step 4: Simplify right side
    417,440.70x = 73,826,220,189.57
  5. Step 5: Solve for x
    x = 73,826,220,189.57/417,440.70
  6. Step 6: Final answer
    x = 176,854.39

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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.