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Finding the Fourth Proportional to 147,065.40, 220,079.70 and 134,623.80

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Solution

The fourth proportional to 147,065.40, 220,079.70 and 134,623.80 is: 201,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,065.40 : 220,079.70 = 134,623.80 : x
  2. Step 2: Convert to fraction form
    147,065.40/220,079.70 = 134,623.80/x
  3. Step 3: Cross multiply
    147,065.40x = 220,079.70 × 134,623.80
  4. Step 4: Simplify right side
    147,065.40x = 29,627,965,516.86
  5. Step 5: Solve for x
    x = 29,627,965,516.86/147,065.40
  6. Step 6: Final answer
    x = 201,461.16

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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.