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Finding the Fourth Proportional to 358,712.47, 537,881.86 and 133,887.99

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Solution

The fourth proportional to 358,712.47, 537,881.86 and 133,887.99 is: 200,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,712.47 : 537,881.86 = 133,887.99 : x
  2. Step 2: Convert to fraction form
    358,712.47/537,881.86 = 133,887.99/x
  3. Step 3: Cross multiply
    358,712.47x = 537,881.86 × 133,887.99
  4. Step 4: Simplify right side
    358,712.47x = 72,015,921,092.86
  5. Step 5: Solve for x
    x = 72,015,921,092.86/358,712.47
  6. Step 6: Final answer
    x = 200,762.25

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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.