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Finding the Fourth Proportional to 70,012.95, 96,616.90 and 38,181.84

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Solution

The fourth proportional to 70,012.95, 96,616.90 and 38,181.84 is: 52,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,012.95 : 96,616.90 = 38,181.84 : x
  2. Step 2: Convert to fraction form
    70,012.95/96,616.90 = 38,181.84/x
  3. Step 3: Cross multiply
    70,012.95x = 96,616.90 × 38,181.84
  4. Step 4: Simplify right side
    70,012.95x = 3,689,011,017.10
  5. Step 5: Solve for x
    x = 3,689,011,017.10/70,012.95
  6. Step 6: Final answer
    x = 52,690.41

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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.