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Finding the Fourth Proportional to 352,659.71, 528,822.80 and 136,619.63

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Solution

The fourth proportional to 352,659.71, 528,822.80 and 136,619.63 is: 204,864.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,659.71 : 528,822.80 = 136,619.63 : x
  2. Step 2: Convert to fraction form
    352,659.71/528,822.80 = 136,619.63/x
  3. Step 3: Cross multiply
    352,659.71x = 528,822.80 × 136,619.63
  4. Step 4: Simplify right side
    352,659.71x = 72,247,575,271.56
  5. Step 5: Solve for x
    x = 72,247,575,271.56/352,659.71
  6. Step 6: Final answer
    x = 204,864.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.