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Finding the Fourth Proportional to 535,988.81, 803,978.34 and 236,469.65

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Solution

The fourth proportional to 535,988.81, 803,978.34 and 236,469.65 is: 354,702.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,988.81 : 803,978.34 = 236,469.65 : x
  2. Step 2: Convert to fraction form
    535,988.81/803,978.34 = 236,469.65/x
  3. Step 3: Cross multiply
    535,988.81x = 803,978.34 × 236,469.65
  4. Step 4: Simplify right side
    535,988.81x = 190,116,472,647.49
  5. Step 5: Solve for x
    x = 190,116,472,647.49/535,988.81
  6. Step 6: Final answer
    x = 354,702.32

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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.