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Finding the Fourth Proportional to 5,280,874.97, 7,921,312.65 and 2,883,411.86

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Solution

The fourth proportional to 5,280,874.97, 7,921,312.65 and 2,883,411.86 is: 4,325,117.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,874.97 : 7,921,312.65 = 2,883,411.86 : x
  2. Step 2: Convert to fraction form
    5,280,874.97/7,921,312.65 = 2,883,411.86/x
  3. Step 3: Cross multiply
    5,280,874.97x = 7,921,312.65 × 2,883,411.86
  4. Step 4: Simplify right side
    5,280,874.97x = 22,840,406,802,171.46
  5. Step 5: Solve for x
    x = 22,840,406,802,171.46/5,280,874.97
  6. Step 6: Final answer
    x = 4,325,117.89

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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.