Home / 353,501.10-529,937.34-128,819.28

Finding the Fourth Proportional to 353,501.10, 529,937.34 and 128,819.28

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Solution

The fourth proportional to 353,501.10, 529,937.34 and 128,819.28 is: 193,114.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,501.10 : 529,937.34 = 128,819.28 : x
  2. Step 2: Convert to fraction form
    353,501.10/529,937.34 = 128,819.28/x
  3. Step 3: Cross multiply
    353,501.10x = 529,937.34 × 128,819.28
  4. Step 4: Simplify right side
    353,501.10x = 68,266,146,583.92
  5. Step 5: Solve for x
    x = 68,266,146,583.92/353,501.10
  6. Step 6: Final answer
    x = 193,114.38

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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.