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Finding the Fourth Proportional to 268,880.72, 403,332.21 and 79,341.08

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Solution

The fourth proportional to 268,880.72, 403,332.21 and 79,341.08 is: 119,014.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,880.72 : 403,332.21 = 79,341.08 : x
  2. Step 2: Convert to fraction form
    268,880.72/403,332.21 = 79,341.08/x
  3. Step 3: Cross multiply
    268,880.72x = 403,332.21 × 79,341.08
  4. Step 4: Simplify right side
    268,880.72x = 32,000,814,148.52
  5. Step 5: Solve for x
    x = 32,000,814,148.52/268,880.72
  6. Step 6: Final answer
    x = 119,014.91

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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.