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Finding the Fourth Proportional to 72,573.85, 108,860.66 and 47,607.95

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Solution

The fourth proportional to 72,573.85, 108,860.66 and 47,607.95 is: 71,411.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,573.85 : 108,860.66 = 47,607.95 : x
  2. Step 2: Convert to fraction form
    72,573.85/108,860.66 = 47,607.95/x
  3. Step 3: Cross multiply
    72,573.85x = 108,860.66 × 47,607.95
  4. Step 4: Simplify right side
    72,573.85x = 5,182,633,070.89
  5. Step 5: Solve for x
    x = 5,182,633,070.89/72,573.85
  6. Step 6: Final answer
    x = 71,411.85

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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.