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Finding the Fourth Proportional to 736,909.60, 1,105,364.40 and 512,960.80

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Solution

The fourth proportional to 736,909.60, 1,105,364.40 and 512,960.80 is: 769,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,909.60 : 1,105,364.40 = 512,960.80 : x
  2. Step 2: Convert to fraction form
    736,909.60/1,105,364.40 = 512,960.80/x
  3. Step 3: Cross multiply
    736,909.60x = 1,105,364.40 × 512,960.80
  4. Step 4: Simplify right side
    736,909.60x = 567,008,606,915.52
  5. Step 5: Solve for x
    x = 567,008,606,915.52/736,909.60
  6. Step 6: Final answer
    x = 769,441.20

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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.