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Finding the Fourth Proportional to 6,784.63, 9,360.16 and 4,131.07

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Solution

The fourth proportional to 6,784.63, 9,360.16 and 4,131.07 is: 5,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,784.63 : 9,360.16 = 4,131.07 : x
  2. Step 2: Convert to fraction form
    6,784.63/9,360.16 = 4,131.07/x
  3. Step 3: Cross multiply
    6,784.63x = 9,360.16 × 4,131.07
  4. Step 4: Simplify right side
    6,784.63x = 38,667,476.17
  5. Step 5: Solve for x
    x = 38,667,476.17/6,784.63
  6. Step 6: Final answer
    x = 5,699.28

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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.