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Finding the Fourth Proportional to 911,042.80, 1,257,392.88 and 529,291

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Solution

The fourth proportional to 911,042.80, 1,257,392.88 and 529,291 is: 730,510.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,042.80 : 1,257,392.88 = 529,291 : x
  2. Step 2: Convert to fraction form
    911,042.80/1,257,392.88 = 529,291/x
  3. Step 3: Cross multiply
    911,042.80x = 1,257,392.88 × 529,291
  4. Step 4: Simplify right side
    911,042.80x = 665,526,734,848.08
  5. Step 5: Solve for x
    x = 665,526,734,848.08/911,042.80
  6. Step 6: Final answer
    x = 730,510.94

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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.