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Finding the Fourth Proportional to 607,866.87, 838,972.19 and 400,771.64

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Solution

The fourth proportional to 607,866.87, 838,972.19 and 400,771.64 is: 553,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,866.87 : 838,972.19 = 400,771.64 : x
  2. Step 2: Convert to fraction form
    607,866.87/838,972.19 = 400,771.64/x
  3. Step 3: Cross multiply
    607,866.87x = 838,972.19 × 400,771.64
  4. Step 4: Simplify right side
    607,866.87x = 336,236,254,301.97
  5. Step 5: Solve for x
    x = 336,236,254,301.97/607,866.87
  6. Step 6: Final answer
    x = 553,141.27

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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.