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Finding the Fourth Proportional to 66,484.40, 99,580.80 and 59,097.20

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Solution

The fourth proportional to 66,484.40, 99,580.80 and 59,097.20 is: 88,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,484.40 : 99,580.80 = 59,097.20 : x
  2. Step 2: Convert to fraction form
    66,484.40/99,580.80 = 59,097.20/x
  3. Step 3: Cross multiply
    66,484.40x = 99,580.80 × 59,097.20
  4. Step 4: Simplify right side
    66,484.40x = 5,884,946,453.76
  5. Step 5: Solve for x
    x = 5,884,946,453.76/66,484.40
  6. Step 6: Final answer
    x = 88,516.20

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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.