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Finding the Fourth Proportional to 243,843.63, 365,689.53 and 86,035.11

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Solution

The fourth proportional to 243,843.63, 365,689.53 and 86,035.11 is: 129,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,843.63 : 365,689.53 = 86,035.11 : x
  2. Step 2: Convert to fraction form
    243,843.63/365,689.53 = 86,035.11/x
  3. Step 3: Cross multiply
    243,843.63x = 365,689.53 × 86,035.11
  4. Step 4: Simplify right side
    243,843.63x = 31,462,138,939.40
  5. Step 5: Solve for x
    x = 31,462,138,939.40/243,843.63
  6. Step 6: Final answer
    x = 129,025.88

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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.