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Finding the Fourth Proportional to 48,047.40, 71,876.70 and 42,215.40

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Solution

The fourth proportional to 48,047.40, 71,876.70 and 42,215.40 is: 63,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,047.40 : 71,876.70 = 42,215.40 : x
  2. Step 2: Convert to fraction form
    48,047.40/71,876.70 = 42,215.40/x
  3. Step 3: Cross multiply
    48,047.40x = 71,876.70 × 42,215.40
  4. Step 4: Simplify right side
    48,047.40x = 3,034,303,641.18
  5. Step 5: Solve for x
    x = 3,034,303,641.18/48,047.40
  6. Step 6: Final answer
    x = 63,152.30

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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.