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Finding the Fourth Proportional to 4,788,415.83, 7,181,294.81 and 1,329,360.87

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Solution

The fourth proportional to 4,788,415.83, 7,181,294.81 and 1,329,360.87 is: 1,993,672.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788,415.83 : 7,181,294.81 = 1,329,360.87 : x
  2. Step 2: Convert to fraction form
    4,788,415.83/7,181,294.81 = 1,329,360.87/x
  3. Step 3: Cross multiply
    4,788,415.83x = 7,181,294.81 × 1,329,360.87
  4. Step 4: Simplify right side
    4,788,415.83x = 9,546,532,309,701.28
  5. Step 5: Solve for x
    x = 9,546,532,309,701.28/4,788,415.83
  6. Step 6: Final answer
    x = 1,993,672.36

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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.