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Finding the Fourth Proportional to 125,219.28, 172,804.14 and 68,630.52

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Solution

The fourth proportional to 125,219.28, 172,804.14 and 68,630.52 is: 94,710.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,219.28 : 172,804.14 = 68,630.52 : x
  2. Step 2: Convert to fraction form
    125,219.28/172,804.14 = 68,630.52/x
  3. Step 3: Cross multiply
    125,219.28x = 172,804.14 × 68,630.52
  4. Step 4: Simplify right side
    125,219.28x = 11,859,637,986.35
  5. Step 5: Solve for x
    x = 11,859,637,986.35/125,219.28
  6. Step 6: Final answer
    x = 94,710.96

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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.