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Finding the Fourth Proportional to 353,105.80, 528,881.10 and 313,707.40

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Solution

The fourth proportional to 353,105.80, 528,881.10 and 313,707.40 is: 469,870.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,105.80 : 528,881.10 = 313,707.40 : x
  2. Step 2: Convert to fraction form
    353,105.80/528,881.10 = 313,707.40/x
  3. Step 3: Cross multiply
    353,105.80x = 528,881.10 × 313,707.40
  4. Step 4: Simplify right side
    353,105.80x = 165,913,914,790.14
  5. Step 5: Solve for x
    x = 165,913,914,790.14/353,105.80
  6. Step 6: Final answer
    x = 469,870.26

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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.