Home / 353,516.10-529,959.78-128,834.34

Finding the Fourth Proportional to 353,516.10, 529,959.78 and 128,834.34

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Solution

The fourth proportional to 353,516.10, 529,959.78 and 128,834.34 is: 193,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,516.10 : 529,959.78 = 128,834.34 : x
  2. Step 2: Convert to fraction form
    353,516.10/529,959.78 = 128,834.34/x
  3. Step 3: Cross multiply
    353,516.10x = 529,959.78 × 128,834.34
  4. Step 4: Simplify right side
    353,516.10x = 68,277,018,482.85
  5. Step 5: Solve for x
    x = 68,277,018,482.85/353,516.10
  6. Step 6: Final answer
    x = 193,136.94

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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.