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Finding the Fourth Proportional to 27,699.66, 38,223.77 and 15,124.41

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Solution

The fourth proportional to 27,699.66, 38,223.77 and 15,124.41 is: 20,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,699.66 : 38,223.77 = 15,124.41 : x
  2. Step 2: Convert to fraction form
    27,699.66/38,223.77 = 15,124.41/x
  3. Step 3: Cross multiply
    27,699.66x = 38,223.77 × 15,124.41
  4. Step 4: Simplify right side
    27,699.66x = 578,111,893.60
  5. Step 5: Solve for x
    x = 578,111,893.60/27,699.66
  6. Step 6: Final answer
    x = 20,870.72

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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.