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Finding the Fourth Proportional to 98,378.96, 135,762.08 and 55,937.49

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Solution

The fourth proportional to 98,378.96, 135,762.08 and 55,937.49 is: 77,193.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,378.96 : 135,762.08 = 55,937.49 : x
  2. Step 2: Convert to fraction form
    98,378.96/135,762.08 = 55,937.49/x
  3. Step 3: Cross multiply
    98,378.96x = 135,762.08 × 55,937.49
  4. Step 4: Simplify right side
    98,378.96x = 7,594,189,992.38
  5. Step 5: Solve for x
    x = 7,594,189,992.38/98,378.96
  6. Step 6: Final answer
    x = 77,193.23

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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.