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Finding the Fourth Proportional to 85,998,411.40, 120,737,898.20 and 85,998,411.40

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Solution

The fourth proportional to 85,998,411.40, 120,737,898.20 and 85,998,411.40 is: 120,737,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998,411.40 : 120,737,898.20 = 85,998,411.40 : x
  2. Step 2: Convert to fraction form
    85,998,411.40/120,737,898.20 = 85,998,411.40/x
  3. Step 3: Cross multiply
    85,998,411.40x = 120,737,898.20 × 85,998,411.40
  4. Step 4: Simplify right side
    85,998,411.40x = 10,383,267,440,974,920
  5. Step 5: Solve for x
    x = 10,383,267,440,974,920/85,998,411.40
  6. Step 6: Final answer
    x = 120,737,898.20

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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.