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Finding the Fourth Proportional to 9,040.61, 13,555.89 and 2,798.89

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Solution

The fourth proportional to 9,040.61, 13,555.89 and 2,798.89 is: 4,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,040.61 : 13,555.89 = 2,798.89 : x
  2. Step 2: Convert to fraction form
    9,040.61/13,555.89 = 2,798.89/x
  3. Step 3: Cross multiply
    9,040.61x = 13,555.89 × 2,798.89
  4. Step 4: Simplify right side
    9,040.61x = 37,941,411.07
  5. Step 5: Solve for x
    x = 37,941,411.07/9,040.61
  6. Step 6: Final answer
    x = 4,196.77

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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.