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Finding the Fourth Proportional to 572,067.64, 857,979.96 and 216,957.16

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Solution

The fourth proportional to 572,067.64, 857,979.96 and 216,957.16 is: 325,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,067.64 : 857,979.96 = 216,957.16 : x
  2. Step 2: Convert to fraction form
    572,067.64/857,979.96 = 216,957.16/x
  3. Step 3: Cross multiply
    572,067.64x = 857,979.96 × 216,957.16
  4. Step 4: Simplify right side
    572,067.64x = 186,144,895,458.51
  5. Step 5: Solve for x
    x = 186,144,895,458.51/572,067.64
  6. Step 6: Final answer
    x = 325,389.66

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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.