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Finding the Fourth Proportional to 768,165.88, 1,059,910.68 and 441,415.72

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Solution

The fourth proportional to 768,165.88, 1,059,910.68 and 441,415.72 is: 609,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,165.88 : 1,059,910.68 = 441,415.72 : x
  2. Step 2: Convert to fraction form
    768,165.88/1,059,910.68 = 441,415.72/x
  3. Step 3: Cross multiply
    768,165.88x = 1,059,910.68 × 441,415.72
  4. Step 4: Simplify right side
    768,165.88x = 467,861,235,947.89
  5. Step 5: Solve for x
    x = 467,861,235,947.89/768,165.88
  6. Step 6: Final answer
    x = 609,062.77

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1.5x scale

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.