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Finding the Fourth Proportional to 96,686.58, 133,426.90 and 54,245

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Solution

The fourth proportional to 96,686.58, 133,426.90 and 54,245 is: 74,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,686.58 : 133,426.90 = 54,245 : x
  2. Step 2: Convert to fraction form
    96,686.58/133,426.90 = 54,245/x
  3. Step 3: Cross multiply
    96,686.58x = 133,426.90 × 54,245
  4. Step 4: Simplify right side
    96,686.58x = 7,237,742,190.50
  5. Step 5: Solve for x
    x = 7,237,742,190.50/96,686.58
  6. Step 6: Final answer
    x = 74,857.77

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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.