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Finding the Fourth Proportional to 353,721.60, 488,144.64 and 192,585.48

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Solution

The fourth proportional to 353,721.60, 488,144.64 and 192,585.48 is: 265,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,721.60 : 488,144.64 = 192,585.48 : x
  2. Step 2: Convert to fraction form
    353,721.60/488,144.64 = 192,585.48/x
  3. Step 3: Cross multiply
    353,721.60x = 488,144.64 × 192,585.48
  4. Step 4: Simplify right side
    353,721.60x = 94,009,569,803.83
  5. Step 5: Solve for x
    x = 94,009,569,803.83/353,721.60
  6. Step 6: Final answer
    x = 265,772.77

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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.