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Finding the Fourth Proportional to 115,036.80, 158,750.46 and 64,735.80

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Solution

The fourth proportional to 115,036.80, 158,750.46 and 64,735.80 is: 89,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,036.80 : 158,750.46 = 64,735.80 : x
  2. Step 2: Convert to fraction form
    115,036.80/158,750.46 = 64,735.80/x
  3. Step 3: Cross multiply
    115,036.80x = 158,750.46 × 64,735.80
  4. Step 4: Simplify right side
    115,036.80x = 10,276,838,028.47
  5. Step 5: Solve for x
    x = 10,276,838,028.47/115,036.80
  6. Step 6: Final answer
    x = 89,335.22

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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.