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Finding the Fourth Proportional to 186,693.78, 257,637.42 and 101,811.42

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Solution

The fourth proportional to 186,693.78, 257,637.42 and 101,811.42 is: 140,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,693.78 : 257,637.42 = 101,811.42 : x
  2. Step 2: Convert to fraction form
    186,693.78/257,637.42 = 101,811.42/x
  3. Step 3: Cross multiply
    186,693.78x = 257,637.42 × 101,811.42
  4. Step 4: Simplify right side
    186,693.78x = 26,230,431,575.34
  5. Step 5: Solve for x
    x = 26,230,431,575.34/186,693.78
  6. Step 6: Final answer
    x = 140,499.76

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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.