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Finding the Fourth Proportional to 10,859,152.60, 16,288,728.90 and 7,221,734.20

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Solution

The fourth proportional to 10,859,152.60, 16,288,728.90 and 7,221,734.20 is: 10,832,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859,152.60 : 16,288,728.90 = 7,221,734.20 : x
  2. Step 2: Convert to fraction form
    10,859,152.60/16,288,728.90 = 7,221,734.20/x
  3. Step 3: Cross multiply
    10,859,152.60x = 16,288,728.90 × 7,221,734.20
  4. Step 4: Simplify right side
    10,859,152.60x = 117,632,870,571,658.39
  5. Step 5: Solve for x
    x = 117,632,870,571,658.39/10,859,152.60
  6. Step 6: Final answer
    x = 10,832,601.30

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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.