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Finding the Fourth Proportional to 352,063.65, 528,097.64 and 85,826.37

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Solution

The fourth proportional to 352,063.65, 528,097.64 and 85,826.37 is: 128,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,063.65 : 528,097.64 = 85,826.37 : x
  2. Step 2: Convert to fraction form
    352,063.65/528,097.64 = 85,826.37/x
  3. Step 3: Cross multiply
    352,063.65x = 528,097.64 × 85,826.37
  4. Step 4: Simplify right side
    352,063.65x = 45,324,703,446.77
  5. Step 5: Solve for x
    x = 45,324,703,446.77/352,063.65
  6. Step 6: Final answer
    x = 128,740.08

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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.