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Finding the Fourth Proportional to 59,197.80, 81,616.74 and 42,221.40

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Solution

The fourth proportional to 59,197.80, 81,616.74 and 42,221.40 is: 58,211.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,197.80 : 81,616.74 = 42,221.40 : x
  2. Step 2: Convert to fraction form
    59,197.80/81,616.74 = 42,221.40/x
  3. Step 3: Cross multiply
    59,197.80x = 81,616.74 × 42,221.40
  4. Step 4: Simplify right side
    59,197.80x = 3,445,973,026.24
  5. Step 5: Solve for x
    x = 3,445,973,026.24/59,197.80
  6. Step 6: Final answer
    x = 58,211.17

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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.