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Finding the Fourth Proportional to 79,181,998.40, 111,005,963.20 and 79,181,998.40

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Solution

The fourth proportional to 79,181,998.40, 111,005,963.20 and 79,181,998.40 is: 111,005,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181,998.40 : 111,005,963.20 = 79,181,998.40 : x
  2. Step 2: Convert to fraction form
    79,181,998.40/111,005,963.20 = 79,181,998.40/x
  3. Step 3: Cross multiply
    79,181,998.40x = 111,005,963.20 × 79,181,998.40
  4. Step 4: Simplify right side
    79,181,998.40x = 8,789,674,000,492,860
  5. Step 5: Solve for x
    x = 8,789,674,000,492,860/79,181,998.40
  6. Step 6: Final answer
    x = 111,005,963.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.