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Finding the Fourth Proportional to 316,318.59, 474,429.09 and 103,085.94

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Solution

The fourth proportional to 316,318.59, 474,429.09 and 103,085.94 is: 154,613.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,318.59 : 474,429.09 = 103,085.94 : x
  2. Step 2: Convert to fraction form
    316,318.59/474,429.09 = 103,085.94/x
  3. Step 3: Cross multiply
    316,318.59x = 474,429.09 × 103,085.94
  4. Step 4: Simplify right side
    316,318.59x = 48,906,968,705.99
  5. Step 5: Solve for x
    x = 48,906,968,705.99/316,318.59
  6. Step 6: Final answer
    x = 154,613.01

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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.