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Finding the Fourth Proportional to 70,431.12, 105,641.46 and 26,037.12

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Solution

The fourth proportional to 70,431.12, 105,641.46 and 26,037.12 is: 39,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,431.12 : 105,641.46 = 26,037.12 : x
  2. Step 2: Convert to fraction form
    70,431.12/105,641.46 = 26,037.12/x
  3. Step 3: Cross multiply
    70,431.12x = 105,641.46 × 26,037.12
  4. Step 4: Simplify right side
    70,431.12x = 2,750,599,371.00
  5. Step 5: Solve for x
    x = 2,750,599,371.00/70,431.12
  6. Step 6: Final answer
    x = 39,053.75

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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.