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Finding the Fourth Proportional to 302,608.80, 453,913.20 and 92,219.40

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Solution

The fourth proportional to 302,608.80, 453,913.20 and 92,219.40 is: 138,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,608.80 : 453,913.20 = 92,219.40 : x
  2. Step 2: Convert to fraction form
    302,608.80/453,913.20 = 92,219.40/x
  3. Step 3: Cross multiply
    302,608.80x = 453,913.20 × 92,219.40
  4. Step 4: Simplify right side
    302,608.80x = 41,859,602,956.08
  5. Step 5: Solve for x
    x = 41,859,602,956.08/302,608.80
  6. Step 6: Final answer
    x = 138,329.10

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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.