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Finding the Fourth Proportional to 352,615.30, 528,814.95 and 115,903.30

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Solution

The fourth proportional to 352,615.30, 528,814.95 and 115,903.30 is: 173,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,615.30 : 528,814.95 = 115,903.30 : x
  2. Step 2: Convert to fraction form
    352,615.30/528,814.95 = 115,903.30/x
  3. Step 3: Cross multiply
    352,615.30x = 528,814.95 × 115,903.30
  4. Step 4: Simplify right side
    352,615.30x = 61,291,397,794.34
  5. Step 5: Solve for x
    x = 61,291,397,794.34/352,615.30
  6. Step 6: Final answer
    x = 173,819.45

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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.