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Finding the Fourth Proportional to 98,000.96, 135,296.73 and 74,987.51

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Solution

The fourth proportional to 98,000.96, 135,296.73 and 74,987.51 is: 103,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,000.96 : 135,296.73 = 74,987.51 : x
  2. Step 2: Convert to fraction form
    98,000.96/135,296.73 = 74,987.51/x
  3. Step 3: Cross multiply
    98,000.96x = 135,296.73 × 74,987.51
  4. Step 4: Simplify right side
    98,000.96x = 10,145,564,217.36
  5. Step 5: Solve for x
    x = 10,145,564,217.36/98,000.96
  6. Step 6: Final answer
    x = 103,525.16

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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.