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Finding the Fourth Proportional to 79,695.52, 109,980.64 and 43,888.88

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Solution

The fourth proportional to 79,695.52, 109,980.64 and 43,888.88 is: 60,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,695.52 : 109,980.64 = 43,888.88 : x
  2. Step 2: Convert to fraction form
    79,695.52/109,980.64 = 43,888.88/x
  3. Step 3: Cross multiply
    79,695.52x = 109,980.64 × 43,888.88
  4. Step 4: Simplify right side
    79,695.52x = 4,826,927,111.28
  5. Step 5: Solve for x
    x = 4,826,927,111.28/79,695.52
  6. Step 6: Final answer
    x = 60,567.11

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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.