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Finding the Fourth Proportional to 321,349.30, 482,023.95 and 155,461.30

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Solution

The fourth proportional to 321,349.30, 482,023.95 and 155,461.30 is: 233,191.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,349.30 : 482,023.95 = 155,461.30 : x
  2. Step 2: Convert to fraction form
    321,349.30/482,023.95 = 155,461.30/x
  3. Step 3: Cross multiply
    321,349.30x = 482,023.95 × 155,461.30
  4. Step 4: Simplify right side
    321,349.30x = 74,936,069,898.14
  5. Step 5: Solve for x
    x = 74,936,069,898.14/321,349.30
  6. Step 6: Final answer
    x = 233,191.95

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1.5x scale

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.