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Finding the Fourth Proportional to 8,762,718.76, 13,145,572.77 and 3,906,787.30

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Solution

The fourth proportional to 8,762,718.76, 13,145,572.77 and 3,906,787.30 is: 5,860,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762,718.76 : 13,145,572.77 = 3,906,787.30 : x
  2. Step 2: Convert to fraction form
    8,762,718.76/13,145,572.77 = 3,906,787.30/x
  3. Step 3: Cross multiply
    8,762,718.76x = 13,145,572.77 × 3,906,787.30
  4. Step 4: Simplify right side
    8,762,718.76x = 51,356,956,749,061.82
  5. Step 5: Solve for x
    x = 51,356,956,749,061.82/8,762,718.76
  6. Step 6: Final answer
    x = 5,860,847.32

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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.