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Finding the Fourth Proportional to 38,696.52, 53,398.98 and 21,699.48

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Solution

The fourth proportional to 38,696.52, 53,398.98 and 21,699.48 is: 29,944.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,696.52 : 53,398.98 = 21,699.48 : x
  2. Step 2: Convert to fraction form
    38,696.52/53,398.98 = 21,699.48/x
  3. Step 3: Cross multiply
    38,696.52x = 53,398.98 × 21,699.48
  4. Step 4: Simplify right side
    38,696.52x = 1,158,730,098.53
  5. Step 5: Solve for x
    x = 1,158,730,098.53/38,696.52
  6. Step 6: Final answer
    x = 29,944.04

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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.