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Finding the Fourth Proportional to 363,798.95, 545,486.60 and 139,174.81

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Solution

The fourth proportional to 363,798.95, 545,486.60 and 139,174.81 is: 208,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,798.95 : 545,486.60 = 139,174.81 : x
  2. Step 2: Convert to fraction form
    363,798.95/545,486.60 = 139,174.81/x
  3. Step 3: Cross multiply
    363,798.95x = 545,486.60 × 139,174.81
  4. Step 4: Simplify right side
    363,798.95x = 75,917,992,896.77
  5. Step 5: Solve for x
    x = 75,917,992,896.77/363,798.95
  6. Step 6: Final answer
    x = 208,681.18

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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.