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Finding the Fourth Proportional to 201,663.20, 302,494.80 and 185,916.80

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Solution

The fourth proportional to 201,663.20, 302,494.80 and 185,916.80 is: 278,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,663.20 : 302,494.80 = 185,916.80 : x
  2. Step 2: Convert to fraction form
    201,663.20/302,494.80 = 185,916.80/x
  3. Step 3: Cross multiply
    201,663.20x = 302,494.80 × 185,916.80
  4. Step 4: Simplify right side
    201,663.20x = 56,238,865,232.64
  5. Step 5: Solve for x
    x = 56,238,865,232.64/201,663.20
  6. Step 6: Final answer
    x = 278,875.20

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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.