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Finding the Fourth Proportional to 418,774.68, 578,011.69 and 237,592.66

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Solution

The fourth proportional to 418,774.68, 578,011.69 and 237,592.66 is: 327,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,774.68 : 578,011.69 = 237,592.66 : x
  2. Step 2: Convert to fraction form
    418,774.68/578,011.69 = 237,592.66/x
  3. Step 3: Cross multiply
    418,774.68x = 578,011.69 × 237,592.66
  4. Step 4: Simplify right side
    418,774.68x = 137,331,334,938.20
  5. Step 5: Solve for x
    x = 137,331,334,938.20/418,774.68
  6. Step 6: Final answer
    x = 327,936.10

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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.