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Finding the Fourth Proportional to 202,115.58, 278,931.78 and 111,471.18

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Solution

The fourth proportional to 202,115.58, 278,931.78 and 111,471.18 is: 153,837.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,115.58 : 278,931.78 = 111,471.18 : x
  2. Step 2: Convert to fraction form
    202,115.58/278,931.78 = 111,471.18/x
  3. Step 3: Cross multiply
    202,115.58x = 278,931.78 × 111,471.18
  4. Step 4: Simplify right side
    202,115.58x = 31,092,854,656.10
  5. Step 5: Solve for x
    x = 31,092,854,656.10/202,115.58
  6. Step 6: Final answer
    x = 153,837.00

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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.