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Finding the Fourth Proportional to 98,416.48, 135,813.48 and 55,395.76

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Solution

The fourth proportional to 98,416.48, 135,813.48 and 55,395.76 is: 76,445.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,416.48 : 135,813.48 = 55,395.76 : x
  2. Step 2: Convert to fraction form
    98,416.48/135,813.48 = 55,395.76/x
  3. Step 3: Cross multiply
    98,416.48x = 135,813.48 × 55,395.76
  4. Step 4: Simplify right side
    98,416.48x = 7,523,490,942.84
  5. Step 5: Solve for x
    x = 7,523,490,942.84/98,416.48
  6. Step 6: Final answer
    x = 76,445.44

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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.