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Finding the Fourth Proportional to 7,852.60, 11,784.30 and 5,663.20

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Solution

The fourth proportional to 7,852.60, 11,784.30 and 5,663.20 is: 8,498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,852.60 : 11,784.30 = 5,663.20 : x
  2. Step 2: Convert to fraction form
    7,852.60/11,784.30 = 5,663.20/x
  3. Step 3: Cross multiply
    7,852.60x = 11,784.30 × 5,663.20
  4. Step 4: Simplify right side
    7,852.60x = 66,736,847.76
  5. Step 5: Solve for x
    x = 66,736,847.76/7,852.60
  6. Step 6: Final answer
    x = 8,498.69

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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.