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Finding the Fourth Proportional to 156,219.80, 215,583.54 and 84,599.92

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Solution

The fourth proportional to 156,219.80, 215,583.54 and 84,599.92 is: 116,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,219.80 : 215,583.54 = 84,599.92 : x
  2. Step 2: Convert to fraction form
    156,219.80/215,583.54 = 84,599.92/x
  3. Step 3: Cross multiply
    156,219.80x = 215,583.54 × 84,599.92
  4. Step 4: Simplify right side
    156,219.80x = 18,238,350,237.32
  5. Step 5: Solve for x
    x = 18,238,350,237.32/156,219.80
  6. Step 6: Final answer
    x = 116,748.01

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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.