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Finding the Fourth Proportional to 193,388.76, 266,888.25 and 128,746.44

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Solution

The fourth proportional to 193,388.76, 266,888.25 and 128,746.44 is: 177,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,388.76 : 266,888.25 = 128,746.44 : x
  2. Step 2: Convert to fraction form
    193,388.76/266,888.25 = 128,746.44/x
  3. Step 3: Cross multiply
    193,388.76x = 266,888.25 × 128,746.44
  4. Step 4: Simplify right side
    193,388.76x = 34,360,912,065.33
  5. Step 5: Solve for x
    x = 34,360,912,065.33/193,388.76
  6. Step 6: Final answer
    x = 177,677.92

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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.