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Finding the Fourth Proportional to 79,947,008.40, 119,920,512.60 and 79,947,008.40

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Solution

The fourth proportional to 79,947,008.40, 119,920,512.60 and 79,947,008.40 is: 119,920,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,947,008.40 : 119,920,512.60 = 79,947,008.40 : x
  2. Step 2: Convert to fraction form
    79,947,008.40/119,920,512.60 = 79,947,008.40/x
  3. Step 3: Cross multiply
    79,947,008.40x = 119,920,512.60 × 79,947,008.40
  4. Step 4: Simplify right side
    79,947,008.40x = 9,587,286,228,164,506
  5. Step 5: Solve for x
    x = 9,587,286,228,164,506/79,947,008.40
  6. Step 6: Final answer
    x = 119,920,512.60

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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.