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Finding the Fourth Proportional to 591,756.80, 887,635.20 and 561,430.40

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Solution

The fourth proportional to 591,756.80, 887,635.20 and 561,430.40 is: 842,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,756.80 : 887,635.20 = 561,430.40 : x
  2. Step 2: Convert to fraction form
    591,756.80/887,635.20 = 561,430.40/x
  3. Step 3: Cross multiply
    591,756.80x = 887,635.20 × 561,430.40
  4. Step 4: Simplify right side
    591,756.80x = 498,345,385,390.08
  5. Step 5: Solve for x
    x = 498,345,385,390.08/591,756.80
  6. Step 6: Final answer
    x = 842,145.60

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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.