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Finding the Fourth Proportional to 283,812.71, 391,656.52 and 154,752.19

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Solution

The fourth proportional to 283,812.71, 391,656.52 and 154,752.19 is: 213,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,812.71 : 391,656.52 = 154,752.19 : x
  2. Step 2: Convert to fraction form
    283,812.71/391,656.52 = 154,752.19/x
  3. Step 3: Cross multiply
    283,812.71x = 391,656.52 × 154,752.19
  4. Step 4: Simplify right side
    283,812.71x = 60,609,702,541.60
  5. Step 5: Solve for x
    x = 60,609,702,541.60/283,812.71
  6. Step 6: Final answer
    x = 213,555.28

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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.