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Finding the Fourth Proportional to 386,891.93, 533,927.54 and 214,809.90

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Solution

The fourth proportional to 386,891.93, 533,927.54 and 214,809.90 is: 296,446.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,891.93 : 533,927.54 = 214,809.90 : x
  2. Step 2: Convert to fraction form
    386,891.93/533,927.54 = 214,809.90/x
  3. Step 3: Cross multiply
    386,891.93x = 533,927.54 × 214,809.90
  4. Step 4: Simplify right side
    386,891.93x = 114,692,921,474.65
  5. Step 5: Solve for x
    x = 114,692,921,474.65/386,891.93
  6. Step 6: Final answer
    x = 296,446.92

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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.