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Finding the Fourth Proportional to 8,065,796.80, 12,098,695.20 and 8,009,809.60

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Solution

The fourth proportional to 8,065,796.80, 12,098,695.20 and 8,009,809.60 is: 12,014,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065,796.80 : 12,098,695.20 = 8,009,809.60 : x
  2. Step 2: Convert to fraction form
    8,065,796.80/12,098,695.20 = 8,009,809.60/x
  3. Step 3: Cross multiply
    8,065,796.80x = 12,098,695.20 × 8,009,809.60
  4. Step 4: Simplify right side
    8,065,796.80x = 96,908,244,960,433.91
  5. Step 5: Solve for x
    x = 96,908,244,960,433.91/8,065,796.80
  6. Step 6: Final answer
    x = 12,014,714.40

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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.