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Finding the Fourth Proportional to 257,777.79, 386,673.17 and 70,788.75

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Solution

The fourth proportional to 257,777.79, 386,673.17 and 70,788.75 is: 106,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,777.79 : 386,673.17 = 70,788.75 : x
  2. Step 2: Convert to fraction form
    257,777.79/386,673.17 = 70,788.75/x
  3. Step 3: Cross multiply
    257,777.79x = 386,673.17 × 70,788.75
  4. Step 4: Simplify right side
    257,777.79x = 27,372,110,008.89
  5. Step 5: Solve for x
    x = 27,372,110,008.89/257,777.79
  6. Step 6: Final answer
    x = 106,184.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.