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Finding the Fourth Proportional to 357,539.48, 536,308.68 and 91,300.04

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Solution

The fourth proportional to 357,539.48, 536,308.68 and 91,300.04 is: 136,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,539.48 : 536,308.68 = 91,300.04 : x
  2. Step 2: Convert to fraction form
    357,539.48/536,308.68 = 91,300.04/x
  3. Step 3: Cross multiply
    357,539.48x = 536,308.68 × 91,300.04
  4. Step 4: Simplify right side
    357,539.48x = 48,965,003,936.35
  5. Step 5: Solve for x
    x = 48,965,003,936.35/357,539.48
  6. Step 6: Final answer
    x = 136,949.92

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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.