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Finding the Fourth Proportional to 1,359,809.07, 1,876,497.35 and 747,961.80

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Solution

The fourth proportional to 1,359,809.07, 1,876,497.35 and 747,961.80 is: 1,032,165.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359,809.07 : 1,876,497.35 = 747,961.80 : x
  2. Step 2: Convert to fraction form
    1,359,809.07/1,876,497.35 = 747,961.80/x
  3. Step 3: Cross multiply
    1,359,809.07x = 1,876,497.35 × 747,961.80
  4. Step 4: Simplify right side
    1,359,809.07x = 1,403,548,331,861.42
  5. Step 5: Solve for x
    x = 1,403,548,331,861.42/1,359,809.07
  6. Step 6: Final answer
    x = 1,032,165.74

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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.