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Finding the Fourth Proportional to 316,146.72, 436,322.20 and 207,342.48

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Solution

The fourth proportional to 316,146.72, 436,322.20 and 207,342.48 is: 286,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,146.72 : 436,322.20 = 207,342.48 : x
  2. Step 2: Convert to fraction form
    316,146.72/436,322.20 = 207,342.48/x
  3. Step 3: Cross multiply
    316,146.72x = 436,322.20 × 207,342.48
  4. Step 4: Simplify right side
    316,146.72x = 90,468,127,027.06
  5. Step 5: Solve for x
    x = 90,468,127,027.06/316,146.72
  6. Step 6: Final answer
    x = 286,158.68

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