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Finding the Fourth Proportional to 65,778.77, 98,678.47 and 21,395.12

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Solution

The fourth proportional to 65,778.77, 98,678.47 and 21,395.12 is: 32,096.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,778.77 : 98,678.47 = 21,395.12 : x
  2. Step 2: Convert to fraction form
    65,778.77/98,678.47 = 21,395.12/x
  3. Step 3: Cross multiply
    65,778.77x = 98,678.47 × 21,395.12
  4. Step 4: Simplify right side
    65,778.77x = 2,111,237,900.27
  5. Step 5: Solve for x
    x = 2,111,237,900.27/65,778.77
  6. Step 6: Final answer
    x = 32,096.04

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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.