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Finding the Fourth Proportional to 38,463.69, 53,079.12 and 21,696.69

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Solution

The fourth proportional to 38,463.69, 53,079.12 and 21,696.69 is: 29,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,463.69 : 53,079.12 = 21,696.69 : x
  2. Step 2: Convert to fraction form
    38,463.69/53,079.12 = 21,696.69/x
  3. Step 3: Cross multiply
    38,463.69x = 53,079.12 × 21,696.69
  4. Step 4: Simplify right side
    38,463.69x = 1,151,641,212.11
  5. Step 5: Solve for x
    x = 1,151,641,212.11/38,463.69
  6. Step 6: Final answer
    x = 29,941.00

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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.