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Finding the Fourth Proportional to 111,449.47, 153,803.46 and 63,709.15

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Solution

The fourth proportional to 111,449.47, 153,803.46 and 63,709.15 is: 87,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,449.47 : 153,803.46 = 63,709.15 : x
  2. Step 2: Convert to fraction form
    111,449.47/153,803.46 = 63,709.15/x
  3. Step 3: Cross multiply
    111,449.47x = 153,803.46 × 63,709.15
  4. Step 4: Simplify right side
    111,449.47x = 9,798,687,703.66
  5. Step 5: Solve for x
    x = 9,798,687,703.66/111,449.47
  6. Step 6: Final answer
    x = 87,920.45

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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.