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Finding the Fourth Proportional to 215,363.66, 323,061.88 and 65,616.72

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Solution

The fourth proportional to 215,363.66, 323,061.88 and 65,616.72 is: 98,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,363.66 : 323,061.88 = 65,616.72 : x
  2. Step 2: Convert to fraction form
    215,363.66/323,061.88 = 65,616.72/x
  3. Step 3: Cross multiply
    215,363.66x = 323,061.88 × 65,616.72
  4. Step 4: Simplify right side
    215,363.66x = 21,198,260,922.63
  5. Step 5: Solve for x
    x = 21,198,260,922.63/215,363.66
  6. Step 6: Final answer
    x = 98,430.07

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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.