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Finding the Fourth Proportional to 72,295.09, 99,631.99 and 52,117.58

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Solution

The fourth proportional to 72,295.09, 99,631.99 and 52,117.58 is: 71,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,295.09 : 99,631.99 = 52,117.58 : x
  2. Step 2: Convert to fraction form
    72,295.09/99,631.99 = 52,117.58/x
  3. Step 3: Cross multiply
    72,295.09x = 99,631.99 × 52,117.58
  4. Step 4: Simplify right side
    72,295.09x = 5,192,578,523.61
  5. Step 5: Solve for x
    x = 5,192,578,523.61/72,295.09
  6. Step 6: Final answer
    x = 71,824.78

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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.