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Finding the Fourth Proportional to 14,970.73, 20,661.53 and 12,448.50

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Solution

The fourth proportional to 14,970.73, 20,661.53 and 12,448.50 is: 17,180.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,970.73 : 20,661.53 = 12,448.50 : x
  2. Step 2: Convert to fraction form
    14,970.73/20,661.53 = 12,448.50/x
  3. Step 3: Cross multiply
    14,970.73x = 20,661.53 × 12,448.50
  4. Step 4: Simplify right side
    14,970.73x = 257,205,056.21
  5. Step 5: Solve for x
    x = 257,205,056.21/14,970.73
  6. Step 6: Final answer
    x = 17,180.53

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1.5x scale

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.