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Finding the Fourth Proportional to 154,775.52, 213,608.16 and 86,811.12

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Solution

The fourth proportional to 154,775.52, 213,608.16 and 86,811.12 is: 119,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,775.52 : 213,608.16 = 86,811.12 : x
  2. Step 2: Convert to fraction form
    154,775.52/213,608.16 = 86,811.12/x
  3. Step 3: Cross multiply
    154,775.52x = 213,608.16 × 86,811.12
  4. Step 4: Simplify right side
    154,775.52x = 18,543,563,610.74
  5. Step 5: Solve for x
    x = 18,543,563,610.74/154,775.52
  6. Step 6: Final answer
    x = 119,809.41

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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.