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Finding the Fourth Proportional to 352,394.86, 528,587.56 and 86,157.67

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Solution

The fourth proportional to 352,394.86, 528,587.56 and 86,157.67 is: 129,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,394.86 : 528,587.56 = 86,157.67 : x
  2. Step 2: Convert to fraction form
    352,394.86/528,587.56 = 86,157.67/x
  3. Step 3: Cross multiply
    352,394.86x = 528,587.56 × 86,157.67
  4. Step 4: Simplify right side
    352,394.86x = 45,541,872,560.59
  5. Step 5: Solve for x
    x = 45,541,872,560.59/352,394.86
  6. Step 6: Final answer
    x = 129,235.35

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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.