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Finding the Fourth Proportional to 141,990.60, 213,423.30 and 134,117.40

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Solution

The fourth proportional to 141,990.60, 213,423.30 and 134,117.40 is: 201,589.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,990.60 : 213,423.30 = 134,117.40 : x
  2. Step 2: Convert to fraction form
    141,990.60/213,423.30 = 134,117.40/x
  3. Step 3: Cross multiply
    141,990.60x = 213,423.30 × 134,117.40
  4. Step 4: Simplify right side
    141,990.60x = 28,623,778,095.42
  5. Step 5: Solve for x
    x = 28,623,778,095.42/141,990.60
  6. Step 6: Final answer
    x = 201,589.25

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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.