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Finding the Fourth Proportional to 1,743,881.67, 2,406,782.16 and 979,935.30

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Solution

The fourth proportional to 1,743,881.67, 2,406,782.16 and 979,935.30 is: 1,352,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743,881.67 : 2,406,782.16 = 979,935.30 : x
  2. Step 2: Convert to fraction form
    1,743,881.67/2,406,782.16 = 979,935.30/x
  3. Step 3: Cross multiply
    1,743,881.67x = 2,406,782.16 × 979,935.30
  4. Step 4: Simplify right side
    1,743,881.67x = 2,358,490,797,994.25
  5. Step 5: Solve for x
    x = 2,358,490,797,994.25/1,743,881.67
  6. Step 6: Final answer
    x = 1,352,437.40

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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.