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Finding the Fourth Proportional to 115,124.76, 158,877.08 and 64,137.46

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Solution

The fourth proportional to 115,124.76, 158,877.08 and 64,137.46 is: 88,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,124.76 : 158,877.08 = 64,137.46 : x
  2. Step 2: Convert to fraction form
    115,124.76/158,877.08 = 64,137.46/x
  3. Step 3: Cross multiply
    115,124.76x = 158,877.08 × 64,137.46
  4. Step 4: Simplify right side
    115,124.76x = 10,189,972,363.42
  5. Step 5: Solve for x
    x = 10,189,972,363.42/115,124.76
  6. Step 6: Final answer
    x = 88,512.43

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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.