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Finding the Fourth Proportional to 38,693.40, 53,407.96 and 22,787.08

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Solution

The fourth proportional to 38,693.40, 53,407.96 and 22,787.08 is: 31,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,693.40 : 53,407.96 = 22,787.08 : x
  2. Step 2: Convert to fraction form
    38,693.40/53,407.96 = 22,787.08/x
  3. Step 3: Cross multiply
    38,693.40x = 53,407.96 × 22,787.08
  4. Step 4: Simplify right side
    38,693.40x = 1,217,011,457.16
  5. Step 5: Solve for x
    x = 1,217,011,457.16/38,693.40
  6. Step 6: Final answer
    x = 31,452.69

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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.