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Finding the Fourth Proportional to 48,502.63, 66,920.51 and 28,364.48

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Solution

The fourth proportional to 48,502.63, 66,920.51 and 28,364.48 is: 39,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,502.63 : 66,920.51 = 28,364.48 : x
  2. Step 2: Convert to fraction form
    48,502.63/66,920.51 = 28,364.48/x
  3. Step 3: Cross multiply
    48,502.63x = 66,920.51 × 28,364.48
  4. Step 4: Simplify right side
    48,502.63x = 1,898,165,454.75
  5. Step 5: Solve for x
    x = 1,898,165,454.75/48,502.63
  6. Step 6: Final answer
    x = 39,135.31

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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.