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Finding the Fourth Proportional to 71,703.18, 98,923.95 and 43,398.54

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Solution

The fourth proportional to 71,703.18, 98,923.95 and 43,398.54 is: 59,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,703.18 : 98,923.95 = 43,398.54 : x
  2. Step 2: Convert to fraction form
    71,703.18/98,923.95 = 43,398.54/x
  3. Step 3: Cross multiply
    71,703.18x = 98,923.95 × 43,398.54
  4. Step 4: Simplify right side
    71,703.18x = 4,293,155,001.03
  5. Step 5: Solve for x
    x = 4,293,155,001.03/71,703.18
  6. Step 6: Final answer
    x = 59,873.98

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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.