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Finding the Fourth Proportional to 79,235.22, 109,345.47 and 43,424.46

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Solution

The fourth proportional to 79,235.22, 109,345.47 and 43,424.46 is: 59,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,235.22 : 109,345.47 = 43,424.46 : x
  2. Step 2: Convert to fraction form
    79,235.22/109,345.47 = 43,424.46/x
  3. Step 3: Cross multiply
    79,235.22x = 109,345.47 × 43,424.46
  4. Step 4: Simplify right side
    79,235.22x = 4,748,267,988.20
  5. Step 5: Solve for x
    x = 4,748,267,988.20/79,235.22
  6. Step 6: Final answer
    x = 59,926.23

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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.