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Finding the Fourth Proportional to 65,833.44, 90,851.48 and 38,966.15

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Solution

The fourth proportional to 65,833.44, 90,851.48 and 38,966.15 is: 53,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,833.44 : 90,851.48 = 38,966.15 : x
  2. Step 2: Convert to fraction form
    65,833.44/90,851.48 = 38,966.15/x
  3. Step 3: Cross multiply
    65,833.44x = 90,851.48 × 38,966.15
  4. Step 4: Simplify right side
    65,833.44x = 3,540,131,748.31
  5. Step 5: Solve for x
    x = 3,540,131,748.31/65,833.44
  6. Step 6: Final answer
    x = 53,774.07

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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.