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Finding the Fourth Proportional to 70,279.94, 105,461.49 and 25,937.57

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Solution

The fourth proportional to 70,279.94, 105,461.49 and 25,937.57 is: 38,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,279.94 : 105,461.49 = 25,937.57 : x
  2. Step 2: Convert to fraction form
    70,279.94/105,461.49 = 25,937.57/x
  3. Step 3: Cross multiply
    70,279.94x = 105,461.49 × 25,937.57
  4. Step 4: Simplify right side
    70,279.94x = 2,735,414,779.18
  5. Step 5: Solve for x
    x = 2,735,414,779.18/70,279.94
  6. Step 6: Final answer
    x = 38,921.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.