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Finding the Fourth Proportional to 79,607.88, 109,859.76 and 45,615.68

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Solution

The fourth proportional to 79,607.88, 109,859.76 and 45,615.68 is: 62,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,607.88 : 109,859.76 = 45,615.68 : x
  2. Step 2: Convert to fraction form
    79,607.88/109,859.76 = 45,615.68/x
  3. Step 3: Cross multiply
    79,607.88x = 109,859.76 × 45,615.68
  4. Step 4: Simplify right side
    79,607.88x = 5,011,327,657.04
  5. Step 5: Solve for x
    x = 5,011,327,657.04/79,607.88
  6. Step 6: Final answer
    x = 62,950.15

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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.