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Finding the Fourth Proportional to 71,594.93, 98,761.20 and 66,526.56

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Solution

The fourth proportional to 71,594.93, 98,761.20 and 66,526.56 is: 91,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,594.93 : 98,761.20 = 66,526.56 : x
  2. Step 2: Convert to fraction form
    71,594.93/98,761.20 = 66,526.56/x
  3. Step 3: Cross multiply
    71,594.93x = 98,761.20 × 66,526.56
  4. Step 4: Simplify right side
    71,594.93x = 6,570,242,897.47
  5. Step 5: Solve for x
    x = 6,570,242,897.47/71,594.93
  6. Step 6: Final answer
    x = 91,769.67

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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.