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Finding the Fourth Proportional to 66,394.52, 91,618.80 and 38,099.60

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Solution

The fourth proportional to 66,394.52, 91,618.80 and 38,099.60 is: 52,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.52 : 91,618.80 = 38,099.60 : x
  2. Step 2: Convert to fraction form
    66,394.52/91,618.80 = 38,099.60/x
  3. Step 3: Cross multiply
    66,394.52x = 91,618.80 × 38,099.60
  4. Step 4: Simplify right side
    66,394.52x = 3,490,639,632.48
  5. Step 5: Solve for x
    x = 3,490,639,632.48/66,394.52
  6. Step 6: Final answer
    x = 52,574.21

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1.5x scale

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.