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Finding the Fourth Proportional to 201,695.70, 302,543.55 and 192,018.90

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Solution

The fourth proportional to 201,695.70, 302,543.55 and 192,018.90 is: 288,028.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,695.70 : 302,543.55 = 192,018.90 : x
  2. Step 2: Convert to fraction form
    201,695.70/302,543.55 = 192,018.90/x
  3. Step 3: Cross multiply
    201,695.70x = 302,543.55 × 192,018.90
  4. Step 4: Simplify right side
    201,695.70x = 58,094,079,673.10
  5. Step 5: Solve for x
    x = 58,094,079,673.10/201,695.70
  6. Step 6: Final answer
    x = 288,028.35

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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.