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Finding the Fourth Proportional to 530,947.20, 796,420.80 and 156,964.80

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Solution

The fourth proportional to 530,947.20, 796,420.80 and 156,964.80 is: 235,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,947.20 : 796,420.80 = 156,964.80 : x
  2. Step 2: Convert to fraction form
    530,947.20/796,420.80 = 156,964.80/x
  3. Step 3: Cross multiply
    530,947.20x = 796,420.80 × 156,964.80
  4. Step 4: Simplify right side
    530,947.20x = 125,010,031,587.84
  5. Step 5: Solve for x
    x = 125,010,031,587.84/530,947.20
  6. Step 6: Final answer
    x = 235,447.20

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Half scale
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Double scale
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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.