Home / 665,979.40-999,098.70-192,680.20

Finding the Fourth Proportional to 665,979.40, 999,098.70 and 192,680.20

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Solution

The fourth proportional to 665,979.40, 999,098.70 and 192,680.20 is: 289,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,979.40 : 999,098.70 = 192,680.20 : x
  2. Step 2: Convert to fraction form
    665,979.40/999,098.70 = 192,680.20/x
  3. Step 3: Cross multiply
    665,979.40x = 999,098.70 × 192,680.20
  4. Step 4: Simplify right side
    665,979.40x = 192,506,537,335.74
  5. Step 5: Solve for x
    x = 192,506,537,335.74/665,979.40
  6. Step 6: Final answer
    x = 289,057.80

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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.