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Finding the Fourth Proportional to 571,976.40, 857,705.40 and 216,872.40

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Solution

The fourth proportional to 571,976.40, 857,705.40 and 216,872.40 is: 325,210.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,976.40 : 857,705.40 = 216,872.40 : x
  2. Step 2: Convert to fraction form
    571,976.40/857,705.40 = 216,872.40/x
  3. Step 3: Cross multiply
    571,976.40x = 857,705.40 × 216,872.40
  4. Step 4: Simplify right side
    571,976.40x = 186,012,628,590.96
  5. Step 5: Solve for x
    x = 186,012,628,590.96/571,976.40
  6. Step 6: Final answer
    x = 325,210.32

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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.