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Finding the Fourth Proportional to 528,843.46, 793,580.38 and 191,910.40

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Solution

The fourth proportional to 528,843.46, 793,580.38 and 191,910.40 is: 287,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,843.46 : 793,580.38 = 191,910.40 : x
  2. Step 2: Convert to fraction form
    528,843.46/793,580.38 = 191,910.40/x
  3. Step 3: Cross multiply
    528,843.46x = 793,580.38 × 191,910.40
  4. Step 4: Simplify right side
    528,843.46x = 152,296,328,157.95
  5. Step 5: Solve for x
    x = 152,296,328,157.95/528,843.46
  6. Step 6: Final answer
    x = 287,979.98

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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.