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Finding the Fourth Proportional to 357,461.02, 536,191.18 and 91,221.54

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Solution

The fourth proportional to 357,461.02, 536,191.18 and 91,221.54 is: 136,832.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,461.02 : 536,191.18 = 91,221.54 : x
  2. Step 2: Convert to fraction form
    357,461.02/536,191.18 = 91,221.54/x
  3. Step 3: Cross multiply
    357,461.02x = 536,191.18 × 91,221.54
  4. Step 4: Simplify right side
    357,461.02x = 48,912,185,174.02
  5. Step 5: Solve for x
    x = 48,912,185,174.02/357,461.02
  6. Step 6: Final answer
    x = 136,832.22

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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.