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Finding the Fourth Proportional to 111,762.40, 154,233.63 and 64,015.71

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Solution

The fourth proportional to 111,762.40, 154,233.63 and 64,015.71 is: 88,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,762.40 : 154,233.63 = 64,015.71 : x
  2. Step 2: Convert to fraction form
    111,762.40/154,233.63 = 64,015.71/x
  3. Step 3: Cross multiply
    111,762.40x = 154,233.63 × 64,015.71
  4. Step 4: Simplify right side
    111,762.40x = 9,873,375,330.33
  5. Step 5: Solve for x
    x = 9,873,375,330.33/111,762.40
  6. Step 6: Final answer
    x = 88,342.55

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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.