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Finding the Fourth Proportional to 1,079,432.63, 1,489,748.25 and 626,723.63

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Solution

The fourth proportional to 1,079,432.63, 1,489,748.25 and 626,723.63 is: 864,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,432.63 : 1,489,748.25 = 626,723.63 : x
  2. Step 2: Convert to fraction form
    1,079,432.63/1,489,748.25 = 626,723.63/x
  3. Step 3: Cross multiply
    1,079,432.63x = 1,489,748.25 × 626,723.63
  4. Step 4: Simplify right side
    1,079,432.63x = 933,660,423,577.41
  5. Step 5: Solve for x
    x = 933,660,423,577.41/1,079,432.63
  6. Step 6: Final answer
    x = 864,954.79

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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.