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Finding the Fourth Proportional to 38,246.46, 52,779.65 and 21,479.46

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Solution

The fourth proportional to 38,246.46, 52,779.65 and 21,479.46 is: 29,641.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,246.46 : 52,779.65 = 21,479.46 : x
  2. Step 2: Convert to fraction form
    38,246.46/52,779.65 = 21,479.46/x
  3. Step 3: Cross multiply
    38,246.46x = 52,779.65 × 21,479.46
  4. Step 4: Simplify right side
    38,246.46x = 1,133,678,273.59
  5. Step 5: Solve for x
    x = 1,133,678,273.59/38,246.46
  6. Step 6: Final answer
    x = 29,641.39

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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.