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Finding the Fourth Proportional to 59,985.76, 82,776.72 and 36,120.16

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Solution

The fourth proportional to 59,985.76, 82,776.72 and 36,120.16 is: 49,843.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,985.76 : 82,776.72 = 36,120.16 : x
  2. Step 2: Convert to fraction form
    59,985.76/82,776.72 = 36,120.16/x
  3. Step 3: Cross multiply
    59,985.76x = 82,776.72 × 36,120.16
  4. Step 4: Simplify right side
    59,985.76x = 2,989,908,370.68
  5. Step 5: Solve for x
    x = 2,989,908,370.68/59,985.76
  6. Step 6: Final answer
    x = 49,843.64

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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.