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Finding the Fourth Proportional to 107,676.42, 148,598.73 and 65,238.90

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Solution

The fourth proportional to 107,676.42, 148,598.73 and 65,238.90 is: 90,032.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,676.42 : 148,598.73 = 65,238.90 : x
  2. Step 2: Convert to fraction form
    107,676.42/148,598.73 = 65,238.90/x
  3. Step 3: Cross multiply
    107,676.42x = 148,598.73 × 65,238.90
  4. Step 4: Simplify right side
    107,676.42x = 9,694,417,686.60
  5. Step 5: Solve for x
    x = 9,694,417,686.60/107,676.42
  6. Step 6: Final answer
    x = 90,032.88

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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.