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Finding the Fourth Proportional to 368,447.95, 508,462.83 and 207,303.31

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Solution

The fourth proportional to 368,447.95, 508,462.83 and 207,303.31 is: 286,081.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,447.95 : 508,462.83 = 207,303.31 : x
  2. Step 2: Convert to fraction form
    368,447.95/508,462.83 = 207,303.31/x
  3. Step 3: Cross multiply
    368,447.95x = 508,462.83 × 207,303.31
  4. Step 4: Simplify right side
    368,447.95x = 105,406,027,670.97
  5. Step 5: Solve for x
    x = 105,406,027,670.97/368,447.95
  6. Step 6: Final answer
    x = 286,081.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.