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Finding the Fourth Proportional to 219,276.10, 328,934.81 and 61,503.90

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Solution

The fourth proportional to 219,276.10, 328,934.81 and 61,503.90 is: 92,261.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,276.10 : 328,934.81 = 61,503.90 : x
  2. Step 2: Convert to fraction form
    219,276.10/328,934.81 = 61,503.90/x
  3. Step 3: Cross multiply
    219,276.10x = 328,934.81 × 61,503.90
  4. Step 4: Simplify right side
    219,276.10x = 20,230,773,660.76
  5. Step 5: Solve for x
    x = 20,230,773,660.76/219,276.10
  6. Step 6: Final answer
    x = 92,261.64

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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.