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Finding the Fourth Proportional to 79,695.65, 109,973.34 and 43,887.57

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Solution

The fourth proportional to 79,695.65, 109,973.34 and 43,887.57 is: 60,561.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,695.65 : 109,973.34 = 43,887.57 : x
  2. Step 2: Convert to fraction form
    79,695.65/109,973.34 = 43,887.57/x
  3. Step 3: Cross multiply
    79,695.65x = 109,973.34 × 43,887.57
  4. Step 4: Simplify right side
    79,695.65x = 4,826,462,657.38
  5. Step 5: Solve for x
    x = 4,826,462,657.38/79,695.65
  6. Step 6: Final answer
    x = 60,561.18

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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.