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Finding the Fourth Proportional to 8,889.48, 12,263.40 and 5,746.68

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Solution

The fourth proportional to 8,889.48, 12,263.40 and 5,746.68 is: 7,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.48 : 12,263.40 = 5,746.68 : x
  2. Step 2: Convert to fraction form
    8,889.48/12,263.40 = 5,746.68/x
  3. Step 3: Cross multiply
    8,889.48x = 12,263.40 × 5,746.68
  4. Step 4: Simplify right side
    8,889.48x = 70,473,835.51
  5. Step 5: Solve for x
    x = 70,473,835.51/8,889.48
  6. Step 6: Final answer
    x = 7,927.78

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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.