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Finding the Fourth Proportional to 570,607.36, 855,735.36 and 215,788.48

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Solution

The fourth proportional to 570,607.36, 855,735.36 and 215,788.48 is: 323,616.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,607.36 : 855,735.36 = 215,788.48 : x
  2. Step 2: Convert to fraction form
    570,607.36/855,735.36 = 215,788.48/x
  3. Step 3: Cross multiply
    570,607.36x = 855,735.36 × 215,788.48
  4. Step 4: Simplify right side
    570,607.36x = 184,657,832,616.65
  5. Step 5: Solve for x
    x = 184,657,832,616.65/570,607.36
  6. Step 6: Final answer
    x = 323,616.28

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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.