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Finding the Fourth Proportional to 210,990.75, 316,486.13 and 63,246.75

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Solution

The fourth proportional to 210,990.75, 316,486.13 and 63,246.75 is: 94,870.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,990.75 : 316,486.13 = 63,246.75 : x
  2. Step 2: Convert to fraction form
    210,990.75/316,486.13 = 63,246.75/x
  3. Step 3: Cross multiply
    210,990.75x = 316,486.13 × 63,246.75
  4. Step 4: Simplify right side
    210,990.75x = 20,016,718,826.34
  5. Step 5: Solve for x
    x = 20,016,718,826.34/210,990.75
  6. Step 6: Final answer
    x = 94,870.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.