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Finding the Fourth Proportional to 353,568.51, 487,915.20 and 192,420.14

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Solution

The fourth proportional to 353,568.51, 487,915.20 and 192,420.14 is: 265,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,568.51 : 487,915.20 = 192,420.14 : x
  2. Step 2: Convert to fraction form
    353,568.51/487,915.20 = 192,420.14/x
  3. Step 3: Cross multiply
    353,568.51x = 487,915.20 × 192,420.14
  4. Step 4: Simplify right side
    353,568.51x = 93,884,708,652.55
  5. Step 5: Solve for x
    x = 93,884,708,652.55/353,568.51
  6. Step 6: Final answer
    x = 265,534.70

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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.