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Finding the Fourth Proportional to 440,211.78, 607,483.80 and 258,943.50

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Solution

The fourth proportional to 440,211.78, 607,483.80 and 258,943.50 is: 357,337.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,211.78 : 607,483.80 = 258,943.50 : x
  2. Step 2: Convert to fraction form
    440,211.78/607,483.80 = 258,943.50/x
  3. Step 3: Cross multiply
    440,211.78x = 607,483.80 × 258,943.50
  4. Step 4: Simplify right side
    440,211.78x = 157,303,981,365.30
  5. Step 5: Solve for x
    x = 157,303,981,365.30/440,211.78
  6. Step 6: Final answer
    x = 357,337.06

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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.