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Finding the Fourth Proportional to 900,343.87, 1,242,379.73 and 537,717.40

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Solution

The fourth proportional to 900,343.87, 1,242,379.73 and 537,717.40 is: 741,993.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,343.87 : 1,242,379.73 = 537,717.40 : x
  2. Step 2: Convert to fraction form
    900,343.87/1,242,379.73 = 537,717.40/x
  3. Step 3: Cross multiply
    900,343.87x = 1,242,379.73 × 537,717.40
  4. Step 4: Simplify right side
    900,343.87x = 668,049,196,466.65
  5. Step 5: Solve for x
    x = 668,049,196,466.65/900,343.87
  6. Step 6: Final answer
    x = 741,993.39

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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.