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Finding the Fourth Proportional to 61,575.34, 84,933.50 and 42,455.92

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Solution

The fourth proportional to 61,575.34, 84,933.50 and 42,455.92 is: 58,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,575.34 : 84,933.50 = 42,455.92 : x
  2. Step 2: Convert to fraction form
    61,575.34/84,933.50 = 42,455.92/x
  3. Step 3: Cross multiply
    61,575.34x = 84,933.50 × 42,455.92
  4. Step 4: Simplify right side
    61,575.34x = 3,605,929,881.32
  5. Step 5: Solve for x
    x = 3,605,929,881.32/61,575.34
  6. Step 6: Final answer
    x = 58,561.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.