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Finding the Fourth Proportional to 98,130.60, 135,422.72 and 55,113.52

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Solution

The fourth proportional to 98,130.60, 135,422.72 and 55,113.52 is: 76,058.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,130.60 : 135,422.72 = 55,113.52 : x
  2. Step 2: Convert to fraction form
    98,130.60/135,422.72 = 55,113.52/x
  3. Step 3: Cross multiply
    98,130.60x = 135,422.72 × 55,113.52
  4. Step 4: Simplify right side
    98,130.60x = 7,463,622,787.17
  5. Step 5: Solve for x
    x = 7,463,622,787.17/98,130.60
  6. Step 6: Final answer
    x = 76,058.06

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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.