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Finding the Fourth Proportional to 352,607.20, 528,856.80 and 115,950.40

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Solution

The fourth proportional to 352,607.20, 528,856.80 and 115,950.40 is: 173,907.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,607.20 : 528,856.80 = 115,950.40 : x
  2. Step 2: Convert to fraction form
    352,607.20/528,856.80 = 115,950.40/x
  3. Step 3: Cross multiply
    352,607.20x = 528,856.80 × 115,950.40
  4. Step 4: Simplify right side
    352,607.20x = 61,321,157,502.72
  5. Step 5: Solve for x
    x = 61,321,157,502.72/352,607.20
  6. Step 6: Final answer
    x = 173,907.84

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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.