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Finding the Fourth Proportional to 357,579.60, 536,368.84 and 91,340.17

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Solution

The fourth proportional to 357,579.60, 536,368.84 and 91,340.17 is: 137,010.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,579.60 : 536,368.84 = 91,340.17 : x
  2. Step 2: Convert to fraction form
    357,579.60/536,368.84 = 91,340.17/x
  3. Step 3: Cross multiply
    357,579.60x = 536,368.84 × 91,340.17
  4. Step 4: Simplify right side
    357,579.60x = 48,992,021,028.30
  5. Step 5: Solve for x
    x = 48,992,021,028.30/357,579.60
  6. Step 6: Final answer
    x = 137,010.11

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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.