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Finding the Fourth Proportional to 464,391.90, 640,867.98 and 260,488.08

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Solution

The fourth proportional to 464,391.90, 640,867.98 and 260,488.08 is: 359,477.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,391.90 : 640,867.98 = 260,488.08 : x
  2. Step 2: Convert to fraction form
    464,391.90/640,867.98 = 260,488.08/x
  3. Step 3: Cross multiply
    464,391.90x = 640,867.98 × 260,488.08
  4. Step 4: Simplify right side
    464,391.90x = 166,938,469,643.68
  5. Step 5: Solve for x
    x = 166,938,469,643.68/464,391.90
  6. Step 6: Final answer
    x = 359,477.57

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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.