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Finding the Fourth Proportional to 111,406.12, 153,737.56 and 63,659.47

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Solution

The fourth proportional to 111,406.12, 153,737.56 and 63,659.47 is: 87,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,406.12 : 153,737.56 = 63,659.47 : x
  2. Step 2: Convert to fraction form
    111,406.12/153,737.56 = 63,659.47/x
  3. Step 3: Cross multiply
    111,406.12x = 153,737.56 × 63,659.47
  4. Step 4: Simplify right side
    111,406.12x = 9,786,851,303.62
  5. Step 5: Solve for x
    x = 9,786,851,303.62/111,406.12
  6. Step 6: Final answer
    x = 87,848.42

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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.