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Finding the Fourth Proportional to 875,704.60, 1,313,459.70 and 717,657.40

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Solution

The fourth proportional to 875,704.60, 1,313,459.70 and 717,657.40 is: 1,076,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,704.60 : 1,313,459.70 = 717,657.40 : x
  2. Step 2: Convert to fraction form
    875,704.60/1,313,459.70 = 717,657.40/x
  3. Step 3: Cross multiply
    875,704.60x = 1,313,459.70 × 717,657.40
  4. Step 4: Simplify right side
    875,704.60x = 942,614,073,306.78
  5. Step 5: Solve for x
    x = 942,614,073,306.78/875,704.60
  6. Step 6: Final answer
    x = 1,076,406.44

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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.