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Finding the Fourth Proportional to 111,570.88, 153,995.12 and 68,560.76

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Solution

The fourth proportional to 111,570.88, 153,995.12 and 68,560.76 is: 94,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,570.88 : 153,995.12 = 68,560.76 : x
  2. Step 2: Convert to fraction form
    111,570.88/153,995.12 = 68,560.76/x
  3. Step 3: Cross multiply
    111,570.88x = 153,995.12 × 68,560.76
  4. Step 4: Simplify right side
    111,570.88x = 10,558,022,463.49
  5. Step 5: Solve for x
    x = 10,558,022,463.49/111,570.88
  6. Step 6: Final answer
    x = 94,630.63

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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.