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Finding the Fourth Proportional to 98,609.54, 136,081.10 and 53,287.50

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Solution

The fourth proportional to 98,609.54, 136,081.10 and 53,287.50 is: 73,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,609.54 : 136,081.10 = 53,287.50 : x
  2. Step 2: Convert to fraction form
    98,609.54/136,081.10 = 53,287.50/x
  3. Step 3: Cross multiply
    98,609.54x = 136,081.10 × 53,287.50
  4. Step 4: Simplify right side
    98,609.54x = 7,251,421,616.25
  5. Step 5: Solve for x
    x = 7,251,421,616.25/98,609.54
  6. Step 6: Final answer
    x = 73,536.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.