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Finding the Fourth Proportional to 357,395.72, 535,974.55 and 144,108.50

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Solution

The fourth proportional to 357,395.72, 535,974.55 and 144,108.50 is: 216,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,395.72 : 535,974.55 = 144,108.50 : x
  2. Step 2: Convert to fraction form
    357,395.72/535,974.55 = 144,108.50/x
  3. Step 3: Cross multiply
    357,395.72x = 535,974.55 × 144,108.50
  4. Step 4: Simplify right side
    357,395.72x = 77,238,485,398.53
  5. Step 5: Solve for x
    x = 77,238,485,398.53/357,395.72
  6. Step 6: Final answer
    x = 216,114.75

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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.