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Finding the Fourth Proportional to 65,988.66, 99,023.49 and 55,030.98

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Solution

The fourth proportional to 65,988.66, 99,023.49 and 55,030.98 is: 82,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988.66 : 99,023.49 = 55,030.98 : x
  2. Step 2: Convert to fraction form
    65,988.66/99,023.49 = 55,030.98/x
  3. Step 3: Cross multiply
    65,988.66x = 99,023.49 × 55,030.98
  4. Step 4: Simplify right side
    65,988.66x = 5,449,359,697.72
  5. Step 5: Solve for x
    x = 5,449,359,697.72/65,988.66
  6. Step 6: Final answer
    x = 82,580.24

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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.