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Finding the Fourth Proportional to 16,779.15, 25,169.76 and 6,915.11

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Solution

The fourth proportional to 16,779.15, 25,169.76 and 6,915.11 is: 10,373.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,779.15 : 25,169.76 = 6,915.11 : x
  2. Step 2: Convert to fraction form
    16,779.15/25,169.76 = 6,915.11/x
  3. Step 3: Cross multiply
    16,779.15x = 25,169.76 × 6,915.11
  4. Step 4: Simplify right side
    16,779.15x = 174,051,533.22
  5. Step 5: Solve for x
    x = 174,051,533.22/16,779.15
  6. Step 6: Final answer
    x = 10,373.08

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1.5x scale

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.