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Finding the Fourth Proportional to 107,797.90, 148,762.74 and 61,864.92

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Solution

The fourth proportional to 107,797.90, 148,762.74 and 61,864.92 is: 85,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,797.90 : 148,762.74 = 61,864.92 : x
  2. Step 2: Convert to fraction form
    107,797.90/148,762.74 = 61,864.92/x
  3. Step 3: Cross multiply
    107,797.90x = 148,762.74 × 61,864.92
  4. Step 4: Simplify right side
    107,797.90x = 9,203,195,009.08
  5. Step 5: Solve for x
    x = 9,203,195,009.08/107,797.90
  6. Step 6: Final answer
    x = 85,374.53

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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.