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Finding the Fourth Proportional to 316,246.59, 474,369.86 and 91,607.10

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Solution

The fourth proportional to 316,246.59, 474,369.86 and 91,607.10 is: 137,410.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,246.59 : 474,369.86 = 91,607.10 : x
  2. Step 2: Convert to fraction form
    316,246.59/474,369.86 = 91,607.10/x
  3. Step 3: Cross multiply
    316,246.59x = 474,369.86 × 91,607.10
  4. Step 4: Simplify right side
    316,246.59x = 43,455,646,743.97
  5. Step 5: Solve for x
    x = 43,455,646,743.97/316,246.59
  6. Step 6: Final answer
    x = 137,410.64

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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.