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Finding the Fourth Proportional to 352,189.40, 528,089.70 and 115,410.20

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Solution

The fourth proportional to 352,189.40, 528,089.70 and 115,410.20 is: 173,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,189.40 : 528,089.70 = 115,410.20 : x
  2. Step 2: Convert to fraction form
    352,189.40/528,089.70 = 115,410.20/x
  3. Step 3: Cross multiply
    352,189.40x = 528,089.70 × 115,410.20
  4. Step 4: Simplify right side
    352,189.40x = 60,946,937,894.94
  5. Step 5: Solve for x
    x = 60,946,937,894.94/352,189.40
  6. Step 6: Final answer
    x = 173,051.60

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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.