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Finding the Fourth Proportional to 356,032.98, 534,048.12 and 145,670.85

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Solution

The fourth proportional to 356,032.98, 534,048.12 and 145,670.85 is: 218,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,032.98 : 534,048.12 = 145,670.85 : x
  2. Step 2: Convert to fraction form
    356,032.98/534,048.12 = 145,670.85/x
  3. Step 3: Cross multiply
    356,032.98x = 534,048.12 × 145,670.85
  4. Step 4: Simplify right side
    356,032.98x = 77,795,243,581.30
  5. Step 5: Solve for x
    x = 77,795,243,581.30/356,032.98
  6. Step 6: Final answer
    x = 218,505.72

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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.