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Finding the Fourth Proportional to 201,637.20, 302,455.80 and 61,377.60

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Solution

The fourth proportional to 201,637.20, 302,455.80 and 61,377.60 is: 92,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,637.20 : 302,455.80 = 61,377.60 : x
  2. Step 2: Convert to fraction form
    201,637.20/302,455.80 = 61,377.60/x
  3. Step 3: Cross multiply
    201,637.20x = 302,455.80 × 61,377.60
  4. Step 4: Simplify right side
    201,637.20x = 18,564,011,110.08
  5. Step 5: Solve for x
    x = 18,564,011,110.08/201,637.20
  6. Step 6: Final answer
    x = 92,066.40

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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.