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Finding the Fourth Proportional to 528,842.46, 793,578.88 and 191,909.40

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Solution

The fourth proportional to 528,842.46, 793,578.88 and 191,909.40 is: 287,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,842.46 : 793,578.88 = 191,909.40 : x
  2. Step 2: Convert to fraction form
    528,842.46/793,578.88 = 191,909.40/x
  3. Step 3: Cross multiply
    528,842.46x = 793,578.88 × 191,909.40
  4. Step 4: Simplify right side
    528,842.46x = 152,295,246,713.47
  5. Step 5: Solve for x
    x = 152,295,246,713.47/528,842.46
  6. Step 6: Final answer
    x = 287,978.48

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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.