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Finding the Fourth Proportional to 14,707.55, 20,299.59 and 9,047.12

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Solution

The fourth proportional to 14,707.55, 20,299.59 and 9,047.12 is: 12,486.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,707.55 : 20,299.59 = 9,047.12 : x
  2. Step 2: Convert to fraction form
    14,707.55/20,299.59 = 9,047.12/x
  3. Step 3: Cross multiply
    14,707.55x = 20,299.59 × 9,047.12
  4. Step 4: Simplify right side
    14,707.55x = 183,652,826.68
  5. Step 5: Solve for x
    x = 183,652,826.68/14,707.55
  6. Step 6: Final answer
    x = 12,486.98

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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.