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Finding the Fourth Proportional to 563,442.48, 845,194.50 and 142,722

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Solution

The fourth proportional to 563,442.48, 845,194.50 and 142,722 is: 214,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,442.48 : 845,194.50 = 142,722 : x
  2. Step 2: Convert to fraction form
    563,442.48/845,194.50 = 142,722/x
  3. Step 3: Cross multiply
    563,442.48x = 845,194.50 × 142,722
  4. Step 4: Simplify right side
    563,442.48x = 120,627,849,429
  5. Step 5: Solve for x
    x = 120,627,849,429/563,442.48
  6. Step 6: Final answer
    x = 214,090.80

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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.