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Finding the Fourth Proportional to 353,207.40, 529,616.70 and 116,428.20

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Solution

The fourth proportional to 353,207.40, 529,616.70 and 116,428.20 is: 174,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,207.40 : 529,616.70 = 116,428.20 : x
  2. Step 2: Convert to fraction form
    353,207.40/529,616.70 = 116,428.20/x
  3. Step 3: Cross multiply
    353,207.40x = 529,616.70 × 116,428.20
  4. Step 4: Simplify right side
    353,207.40x = 61,662,319,070.94
  5. Step 5: Solve for x
    x = 61,662,319,070.94/353,207.40
  6. Step 6: Final answer
    x = 174,578.22

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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.