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Finding the Fourth Proportional to 38,554.36, 53,200.74 and 21,787.36

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Solution

The fourth proportional to 38,554.36, 53,200.74 and 21,787.36 is: 30,064.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,554.36 : 53,200.74 = 21,787.36 : x
  2. Step 2: Convert to fraction form
    38,554.36/53,200.74 = 21,787.36/x
  3. Step 3: Cross multiply
    38,554.36x = 53,200.74 × 21,787.36
  4. Step 4: Simplify right side
    38,554.36x = 1,159,103,674.65
  5. Step 5: Solve for x
    x = 1,159,103,674.65/38,554.36
  6. Step 6: Final answer
    x = 30,064.14

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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.