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Finding the Fourth Proportional to 172,805.12, 238,476.12 and 101,178.44

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Solution

The fourth proportional to 172,805.12, 238,476.12 and 101,178.44 is: 139,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,805.12 : 238,476.12 = 101,178.44 : x
  2. Step 2: Convert to fraction form
    172,805.12/238,476.12 = 101,178.44/x
  3. Step 3: Cross multiply
    172,805.12x = 238,476.12 × 101,178.44
  4. Step 4: Simplify right side
    172,805.12x = 24,128,641,798.85
  5. Step 5: Solve for x
    x = 24,128,641,798.85/172,805.12
  6. Step 6: Final answer
    x = 139,629.21

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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.