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Finding the Fourth Proportional to 98,683.92, 136,180.44 and 56,256.12

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Solution

The fourth proportional to 98,683.92, 136,180.44 and 56,256.12 is: 77,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,683.92 : 136,180.44 = 56,256.12 : x
  2. Step 2: Convert to fraction form
    98,683.92/136,180.44 = 56,256.12/x
  3. Step 3: Cross multiply
    98,683.92x = 136,180.44 × 56,256.12
  4. Step 4: Simplify right side
    98,683.92x = 7,660,983,174.29
  5. Step 5: Solve for x
    x = 7,660,983,174.29/98,683.92
  6. Step 6: Final answer
    x = 77,631.52

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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.