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Finding the Fourth Proportional to 357,513.30, 536,269.32 and 91,273.74

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Solution

The fourth proportional to 357,513.30, 536,269.32 and 91,273.74 is: 136,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,513.30 : 536,269.32 = 91,273.74 : x
  2. Step 2: Convert to fraction form
    357,513.30/536,269.32 = 91,273.74/x
  3. Step 3: Cross multiply
    357,513.30x = 536,269.32 × 91,273.74
  4. Step 4: Simplify right side
    357,513.30x = 48,947,306,483.66
  5. Step 5: Solve for x
    x = 48,947,306,483.66/357,513.30
  6. Step 6: Final answer
    x = 136,910.45

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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.