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Finding the Fourth Proportional to 8,757.90, 12,086.04 and 4,779.03

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Solution

The fourth proportional to 8,757.90, 12,086.04 and 4,779.03 is: 6,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.90 : 12,086.04 = 4,779.03 : x
  2. Step 2: Convert to fraction form
    8,757.90/12,086.04 = 4,779.03/x
  3. Step 3: Cross multiply
    8,757.90x = 12,086.04 × 4,779.03
  4. Step 4: Simplify right side
    8,757.90x = 57,759,547.74
  5. Step 5: Solve for x
    x = 57,759,547.74/8,757.90
  6. Step 6: Final answer
    x = 6,595.14

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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.