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Finding the Fourth Proportional to 353,087.71, 487,264.21 and 191,943.07

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Solution

The fourth proportional to 353,087.71, 487,264.21 and 191,943.07 is: 264,883.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,087.71 : 487,264.21 = 191,943.07 : x
  2. Step 2: Convert to fraction form
    353,087.71/487,264.21 = 191,943.07/x
  3. Step 3: Cross multiply
    353,087.71x = 487,264.21 × 191,943.07
  4. Step 4: Simplify right side
    353,087.71x = 93,526,986,670.51
  5. Step 5: Solve for x
    x = 93,526,986,670.51/353,087.71
  6. Step 6: Final answer
    x = 264,883.16

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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.