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Finding the Fourth Proportional to 66,100.55, 99,150.80 and 19,353.42

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Solution

The fourth proportional to 66,100.55, 99,150.80 and 19,353.42 is: 29,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,100.55 : 99,150.80 = 19,353.42 : x
  2. Step 2: Convert to fraction form
    66,100.55/99,150.80 = 19,353.42/x
  3. Step 3: Cross multiply
    66,100.55x = 99,150.80 × 19,353.42
  4. Step 4: Simplify right side
    66,100.55x = 1,918,906,978.97
  5. Step 5: Solve for x
    x = 1,918,906,978.97/66,100.55
  6. Step 6: Final answer
    x = 29,030.12

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1.5x scale

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.