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Finding the Fourth Proportional to 154,300.75, 212,957.71 and 93,859.66

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Solution

The fourth proportional to 154,300.75, 212,957.71 and 93,859.66 is: 129,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,300.75 : 212,957.71 = 93,859.66 : x
  2. Step 2: Convert to fraction form
    154,300.75/212,957.71 = 93,859.66/x
  3. Step 3: Cross multiply
    154,300.75x = 212,957.71 × 93,859.66
  4. Step 4: Simplify right side
    154,300.75x = 19,988,138,286.53
  5. Step 5: Solve for x
    x = 19,988,138,286.53/154,300.75
  6. Step 6: Final answer
    x = 129,540.13

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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.