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Finding the Fourth Proportional to 193,122.48, 266,602.24 and 128,698.90

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Solution

The fourth proportional to 193,122.48, 266,602.24 and 128,698.90 is: 177,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,122.48 : 266,602.24 = 128,698.90 : x
  2. Step 2: Convert to fraction form
    193,122.48/266,602.24 = 128,698.90/x
  3. Step 3: Cross multiply
    193,122.48x = 266,602.24 × 128,698.90
  4. Step 4: Simplify right side
    193,122.48x = 34,311,415,025.54
  5. Step 5: Solve for x
    x = 34,311,415,025.54/193,122.48
  6. Step 6: Final answer
    x = 177,666.60

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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.