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Finding the Fourth Proportional to 125,752.20, 173,538.75 and 68,392.20

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Solution

The fourth proportional to 125,752.20, 173,538.75 and 68,392.20 is: 94,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,752.20 : 173,538.75 = 68,392.20 : x
  2. Step 2: Convert to fraction form
    125,752.20/173,538.75 = 68,392.20/x
  3. Step 3: Cross multiply
    125,752.20x = 173,538.75 × 68,392.20
  4. Step 4: Simplify right side
    125,752.20x = 11,868,696,828.84
  5. Step 5: Solve for x
    x = 11,868,696,828.84/125,752.20
  6. Step 6: Final answer
    x = 94,381.63

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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.