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Finding the Fourth Proportional to 202,443.90, 279,358.52 and 111,799.08

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Solution

The fourth proportional to 202,443.90, 279,358.52 and 111,799.08 is: 154,274.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,443.90 : 279,358.52 = 111,799.08 : x
  2. Step 2: Convert to fraction form
    202,443.90/279,358.52 = 111,799.08/x
  3. Step 3: Cross multiply
    202,443.90x = 279,358.52 × 111,799.08
  4. Step 4: Simplify right side
    202,443.90x = 31,232,024,967.17
  5. Step 5: Solve for x
    x = 31,232,024,967.17/202,443.90
  6. Step 6: Final answer
    x = 154,274.96

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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.