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Finding the Fourth Proportional to 417,693.40, 626,102.70 and 164,876.20

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Solution

The fourth proportional to 417,693.40, 626,102.70 and 164,876.20 is: 247,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,693.40 : 626,102.70 = 164,876.20 : x
  2. Step 2: Convert to fraction form
    417,693.40/626,102.70 = 164,876.20/x
  3. Step 3: Cross multiply
    417,693.40x = 626,102.70 × 164,876.20
  4. Step 4: Simplify right side
    417,693.40x = 103,229,433,985.74
  5. Step 5: Solve for x
    x = 103,229,433,985.74/417,693.40
  6. Step 6: Final answer
    x = 247,141.65

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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.