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Finding the Fourth Proportional to 99,648,226.80, 149,495,959.80 and 51,133,568.40

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Solution

The fourth proportional to 99,648,226.80, 149,495,959.80 and 51,133,568.40 is: 76,712,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648,226.80 : 149,495,959.80 = 51,133,568.40 : x
  2. Step 2: Convert to fraction form
    99,648,226.80/149,495,959.80 = 51,133,568.40/x
  3. Step 3: Cross multiply
    99,648,226.80x = 149,495,959.80 × 51,133,568.40
  4. Step 4: Simplify right side
    99,648,226.80x = 7,644,261,885,956,951
  5. Step 5: Solve for x
    x = 7,644,261,885,956,951/99,648,226.80
  6. Step 6: Final answer
    x = 76,712,472.78

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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.