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Finding the Fourth Proportional to 67,347.70, 92,901.78 and 42,153.46

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Solution

The fourth proportional to 67,347.70, 92,901.78 and 42,153.46 is: 58,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,347.70 : 92,901.78 = 42,153.46 : x
  2. Step 2: Convert to fraction form
    67,347.70/92,901.78 = 42,153.46/x
  3. Step 3: Cross multiply
    67,347.70x = 92,901.78 × 42,153.46
  4. Step 4: Simplify right side
    67,347.70x = 3,916,131,467.16
  5. Step 5: Solve for x
    x = 3,916,131,467.16/67,347.70
  6. Step 6: Final answer
    x = 58,147.96

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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.