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Finding the Fourth Proportional to 60,720.84, 83,762.91 and 49,402.98

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Solution

The fourth proportional to 60,720.84, 83,762.91 and 49,402.98 is: 68,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,720.84 : 83,762.91 = 49,402.98 : x
  2. Step 2: Convert to fraction form
    60,720.84/83,762.91 = 49,402.98/x
  3. Step 3: Cross multiply
    60,720.84x = 83,762.91 × 49,402.98
  4. Step 4: Simplify right side
    60,720.84x = 4,138,137,367.47
  5. Step 5: Solve for x
    x = 4,138,137,367.47/60,720.84
  6. Step 6: Final answer
    x = 68,150.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.