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Finding the Fourth Proportional to 127,655,315.20, 191,482,972.80 and 127,655,315.20

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Solution

The fourth proportional to 127,655,315.20, 191,482,972.80 and 127,655,315.20 is: 191,482,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,655,315.20 : 191,482,972.80 = 127,655,315.20 : x
  2. Step 2: Convert to fraction form
    127,655,315.20/191,482,972.80 = 127,655,315.20/x
  3. Step 3: Cross multiply
    127,655,315.20x = 191,482,972.80 × 127,655,315.20
  4. Step 4: Simplify right side
    127,655,315.20x = 24,443,819,248,217,028
  5. Step 5: Solve for x
    x = 24,443,819,248,217,028/127,655,315.20
  6. Step 6: Final answer
    x = 191,482,972.80

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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.