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Finding the Fourth Proportional to 111,473.22, 153,902.79 and 77,471.58

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Solution

The fourth proportional to 111,473.22, 153,902.79 and 77,471.58 is: 106,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,473.22 : 153,902.79 = 77,471.58 : x
  2. Step 2: Convert to fraction form
    111,473.22/153,902.79 = 77,471.58/x
  3. Step 3: Cross multiply
    111,473.22x = 153,902.79 × 77,471.58
  4. Step 4: Simplify right side
    111,473.22x = 11,923,092,307.71
  5. Step 5: Solve for x
    x = 11,923,092,307.71/111,473.22
  6. Step 6: Final answer
    x = 106,959.25

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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.