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Finding the Fourth Proportional to 201,931.60, 302,894.70 and 61,690.90

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Solution

The fourth proportional to 201,931.60, 302,894.70 and 61,690.90 is: 92,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,931.60 : 302,894.70 = 61,690.90 : x
  2. Step 2: Convert to fraction form
    201,931.60/302,894.70 = 61,690.90/x
  3. Step 3: Cross multiply
    201,931.60x = 302,894.70 × 61,690.90
  4. Step 4: Simplify right side
    201,931.60x = 18,685,846,648.23
  5. Step 5: Solve for x
    x = 18,685,846,648.23/201,931.60
  6. Step 6: Final answer
    x = 92,535.53

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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.