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Finding the Fourth Proportional to 472,497.80, 708,746.70 and 156,986.60

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Solution

The fourth proportional to 472,497.80, 708,746.70 and 156,986.60 is: 235,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,497.80 : 708,746.70 = 156,986.60 : x
  2. Step 2: Convert to fraction form
    472,497.80/708,746.70 = 156,986.60/x
  3. Step 3: Cross multiply
    472,497.80x = 708,746.70 × 156,986.60
  4. Step 4: Simplify right side
    472,497.80x = 111,263,734,694.22
  5. Step 5: Solve for x
    x = 111,263,734,694.22/472,497.80
  6. Step 6: Final answer
    x = 235,479.90

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Similar ratio
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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.