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Finding the Fourth Proportional to 32,424.80, 48,629.10 and 12,429.95

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Solution

The fourth proportional to 32,424.80, 48,629.10 and 12,429.95 is: 18,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,424.80 : 48,629.10 = 12,429.95 : x
  2. Step 2: Convert to fraction form
    32,424.80/48,629.10 = 12,429.95/x
  3. Step 3: Cross multiply
    32,424.80x = 48,629.10 × 12,429.95
  4. Step 4: Simplify right side
    32,424.80x = 604,457,281.55
  5. Step 5: Solve for x
    x = 604,457,281.55/32,424.80
  6. Step 6: Final answer
    x = 18,641.82

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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.