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Finding the Fourth Proportional to 9,078.70, 13,624.80 and 4,693.90

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Solution

The fourth proportional to 9,078.70, 13,624.80 and 4,693.90 is: 7,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.70 : 13,624.80 = 4,693.90 : x
  2. Step 2: Convert to fraction form
    9,078.70/13,624.80 = 4,693.90/x
  3. Step 3: Cross multiply
    9,078.70x = 13,624.80 × 4,693.90
  4. Step 4: Simplify right side
    9,078.70x = 63,953,448.72
  5. Step 5: Solve for x
    x = 63,953,448.72/9,078.70
  6. Step 6: Final answer
    x = 7,044.34

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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.