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Finding the Fourth Proportional to 115,995.56, 160,071.20 and 67,594.40

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Solution

The fourth proportional to 115,995.56, 160,071.20 and 67,594.40 is: 93,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,995.56 : 160,071.20 = 67,594.40 : x
  2. Step 2: Convert to fraction form
    115,995.56/160,071.20 = 67,594.40/x
  3. Step 3: Cross multiply
    115,995.56x = 160,071.20 × 67,594.40
  4. Step 4: Simplify right side
    115,995.56x = 10,819,916,721.28
  5. Step 5: Solve for x
    x = 10,819,916,721.28/115,995.56
  6. Step 6: Final answer
    x = 93,278.71

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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.