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Finding the Fourth Proportional to 570,109.91, 855,028.77 and 170,643.42

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Solution

The fourth proportional to 570,109.91, 855,028.77 and 170,643.42 is: 255,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,109.91 : 855,028.77 = 170,643.42 : x
  2. Step 2: Convert to fraction form
    570,109.91/855,028.77 = 170,643.42/x
  3. Step 3: Cross multiply
    570,109.91x = 855,028.77 × 170,643.42
  4. Step 4: Simplify right side
    570,109.91x = 145,905,033,511.19
  5. Step 5: Solve for x
    x = 145,905,033,511.19/570,109.91
  6. Step 6: Final answer
    x = 255,924.40

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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.