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Finding the Fourth Proportional to 9,359.63, 12,929.95 and 8,098.49

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Solution

The fourth proportional to 9,359.63, 12,929.95 and 8,098.49 is: 11,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.63 : 12,929.95 = 8,098.49 : x
  2. Step 2: Convert to fraction form
    9,359.63/12,929.95 = 8,098.49/x
  3. Step 3: Cross multiply
    9,359.63x = 12,929.95 × 8,098.49
  4. Step 4: Simplify right side
    9,359.63x = 104,713,070.78
  5. Step 5: Solve for x
    x = 104,713,070.78/9,359.63
  6. Step 6: Final answer
    x = 11,187.74

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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.