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Finding the Fourth Proportional to 66,272.80, 99,344.40 and 59,274.40

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Solution

The fourth proportional to 66,272.80, 99,344.40 and 59,274.40 is: 88,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,272.80 : 99,344.40 = 59,274.40 : x
  2. Step 2: Convert to fraction form
    66,272.80/99,344.40 = 59,274.40/x
  3. Step 3: Cross multiply
    66,272.80x = 99,344.40 × 59,274.40
  4. Step 4: Simplify right side
    66,272.80x = 5,888,579,703.36
  5. Step 5: Solve for x
    x = 5,888,579,703.36/66,272.80
  6. Step 6: Final answer
    x = 88,853.64

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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.