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Finding the Fourth Proportional to 293,572.20, 440,358.30 and 153,312.60

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Solution

The fourth proportional to 293,572.20, 440,358.30 and 153,312.60 is: 229,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,572.20 : 440,358.30 = 153,312.60 : x
  2. Step 2: Convert to fraction form
    293,572.20/440,358.30 = 153,312.60/x
  3. Step 3: Cross multiply
    293,572.20x = 440,358.30 × 153,312.60
  4. Step 4: Simplify right side
    293,572.20x = 67,512,475,904.58
  5. Step 5: Solve for x
    x = 67,512,475,904.58/293,572.20
  6. Step 6: Final answer
    x = 229,968.90

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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.