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Finding the Fourth Proportional to 243,993.56, 366,019.86 and 86,189.72

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Solution

The fourth proportional to 243,993.56, 366,019.86 and 86,189.72 is: 129,295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,993.56 : 366,019.86 = 86,189.72 : x
  2. Step 2: Convert to fraction form
    243,993.56/366,019.86 = 86,189.72/x
  3. Step 3: Cross multiply
    243,993.56x = 366,019.86 × 86,189.72
  4. Step 4: Simplify right side
    243,993.56x = 31,547,149,247.84
  5. Step 5: Solve for x
    x = 31,547,149,247.84/243,993.56
  6. Step 6: Final answer
    x = 129,295.01

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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.