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Finding the Fourth Proportional to 98,463.48, 135,884.70 and 56,028.12

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Solution

The fourth proportional to 98,463.48, 135,884.70 and 56,028.12 is: 77,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,463.48 : 135,884.70 = 56,028.12 : x
  2. Step 2: Convert to fraction form
    98,463.48/135,884.70 = 56,028.12/x
  3. Step 3: Cross multiply
    98,463.48x = 135,884.70 × 56,028.12
  4. Step 4: Simplify right side
    98,463.48x = 7,613,364,277.76
  5. Step 5: Solve for x
    x = 7,613,364,277.76/98,463.48
  6. Step 6: Final answer
    x = 77,321.71

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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.