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Finding the Fourth Proportional to 45,643.80, 68,516.90 and 35,301.40

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Solution

The fourth proportional to 45,643.80, 68,516.90 and 35,301.40 is: 52,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,643.80 : 68,516.90 = 35,301.40 : x
  2. Step 2: Convert to fraction form
    45,643.80/68,516.90 = 35,301.40/x
  3. Step 3: Cross multiply
    45,643.80x = 68,516.90 × 35,301.40
  4. Step 4: Simplify right side
    45,643.80x = 2,418,742,493.66
  5. Step 5: Solve for x
    x = 2,418,742,493.66/45,643.80
  6. Step 6: Final answer
    x = 52,991.70

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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.