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Finding the Fourth Proportional to 472,563.60, 708,910.20 and 156,987.60

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Solution

The fourth proportional to 472,563.60, 708,910.20 and 156,987.60 is: 235,502.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,563.60 : 708,910.20 = 156,987.60 : x
  2. Step 2: Convert to fraction form
    472,563.60/708,910.20 = 156,987.60/x
  3. Step 3: Cross multiply
    472,563.60x = 708,910.20 × 156,987.60
  4. Step 4: Simplify right side
    472,563.60x = 111,290,110,913.52
  5. Step 5: Solve for x
    x = 111,290,110,913.52/472,563.60
  6. Step 6: Final answer
    x = 235,502.93

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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.