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Finding the Fourth Proportional to 14,887.85, 20,544.59 and 8,916.03

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Solution

The fourth proportional to 14,887.85, 20,544.59 and 8,916.03 is: 12,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.85 : 20,544.59 = 8,916.03 : x
  2. Step 2: Convert to fraction form
    14,887.85/20,544.59 = 8,916.03/x
  3. Step 3: Cross multiply
    14,887.85x = 20,544.59 × 8,916.03
  4. Step 4: Simplify right side
    14,887.85x = 183,176,136.20
  5. Step 5: Solve for x
    x = 183,176,136.20/14,887.85
  6. Step 6: Final answer
    x = 12,303.74

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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.