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Finding the Fourth Proportional to 70,511.40, 105,767.10 and 23,126.40

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Solution

The fourth proportional to 70,511.40, 105,767.10 and 23,126.40 is: 34,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,511.40 : 105,767.10 = 23,126.40 : x
  2. Step 2: Convert to fraction form
    70,511.40/105,767.10 = 23,126.40/x
  3. Step 3: Cross multiply
    70,511.40x = 105,767.10 × 23,126.40
  4. Step 4: Simplify right side
    70,511.40x = 2,446,012,261.44
  5. Step 5: Solve for x
    x = 2,446,012,261.44/70,511.40
  6. Step 6: Final answer
    x = 34,689.60

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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.