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Finding the Fourth Proportional to 216,683.20, 299,104.80 and 193,981.12

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Solution

The fourth proportional to 216,683.20, 299,104.80 and 193,981.12 is: 267,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,683.20 : 299,104.80 = 193,981.12 : x
  2. Step 2: Convert to fraction form
    216,683.20/299,104.80 = 193,981.12/x
  3. Step 3: Cross multiply
    216,683.20x = 299,104.80 × 193,981.12
  4. Step 4: Simplify right side
    216,683.20x = 58,020,684,101.38
  5. Step 5: Solve for x
    x = 58,020,684,101.38/216,683.20
  6. Step 6: Final answer
    x = 267,767.34

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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.