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Finding the Fourth Proportional to 868,110.90, 1,301,728.95 and 513,233.70

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Solution

The fourth proportional to 868,110.90, 1,301,728.95 and 513,233.70 is: 769,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,110.90 : 1,301,728.95 = 513,233.70 : x
  2. Step 2: Convert to fraction form
    868,110.90/1,301,728.95 = 513,233.70/x
  3. Step 3: Cross multiply
    868,110.90x = 1,301,728.95 × 513,233.70
  4. Step 4: Simplify right side
    868,110.90x = 668,091,165,405.62
  5. Step 5: Solve for x
    x = 668,091,165,405.62/868,110.90
  6. Step 6: Final answer
    x = 769,591.96

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1.5x scale

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.