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Finding the Fourth Proportional to 198,775.65, 274,412.01 and 153,351.66

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Solution

The fourth proportional to 198,775.65, 274,412.01 and 153,351.66 is: 211,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,775.65 : 274,412.01 = 153,351.66 : x
  2. Step 2: Convert to fraction form
    198,775.65/274,412.01 = 153,351.66/x
  3. Step 3: Cross multiply
    198,775.65x = 274,412.01 × 153,351.66
  4. Step 4: Simplify right side
    198,775.65x = 42,081,537,257.44
  5. Step 5: Solve for x
    x = 42,081,537,257.44/198,775.65
  6. Step 6: Final answer
    x = 211,703.68

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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.