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Finding the Fourth Proportional to 56,508.71, 84,703.75 and 19,055.72

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Solution

The fourth proportional to 56,508.71, 84,703.75 and 19,055.72 is: 28,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,508.71 : 84,703.75 = 19,055.72 : x
  2. Step 2: Convert to fraction form
    56,508.71/84,703.75 = 19,055.72/x
  3. Step 3: Cross multiply
    56,508.71x = 84,703.75 × 19,055.72
  4. Step 4: Simplify right side
    56,508.71x = 1,614,091,107.07
  5. Step 5: Solve for x
    x = 1,614,091,107.07/56,508.71
  6. Step 6: Final answer
    x = 28,563.58

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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.