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Finding the Fourth Proportional to 438,000.28, 604,440.54 and 236,796.28

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Solution

The fourth proportional to 438,000.28, 604,440.54 and 236,796.28 is: 326,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,000.28 : 604,440.54 = 236,796.28 : x
  2. Step 2: Convert to fraction form
    438,000.28/604,440.54 = 236,796.28/x
  3. Step 3: Cross multiply
    438,000.28x = 604,440.54 × 236,796.28
  4. Step 4: Simplify right side
    438,000.28x = 143,129,271,353.19
  5. Step 5: Solve for x
    x = 143,129,271,353.19/438,000.28
  6. Step 6: Final answer
    x = 326,778.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.