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Finding the Fourth Proportional to 356,424.70, 534,781.05 and 156,783.10

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Solution

The fourth proportional to 356,424.70, 534,781.05 and 156,783.10 is: 235,237.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,424.70 : 534,781.05 = 156,783.10 : x
  2. Step 2: Convert to fraction form
    356,424.70/534,781.05 = 156,783.10/x
  3. Step 3: Cross multiply
    356,424.70x = 534,781.05 × 156,783.10
  4. Step 4: Simplify right side
    356,424.70x = 83,844,630,840.26
  5. Step 5: Solve for x
    x = 83,844,630,840.26/356,424.70
  6. Step 6: Final answer
    x = 235,237.99

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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.