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Finding the Fourth Proportional to 107,361.94, 148,173.14 and 64,920.77

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Solution

The fourth proportional to 107,361.94, 148,173.14 and 64,920.77 is: 89,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,361.94 : 148,173.14 = 64,920.77 : x
  2. Step 2: Convert to fraction form
    107,361.94/148,173.14 = 64,920.77/x
  3. Step 3: Cross multiply
    107,361.94x = 148,173.14 × 64,920.77
  4. Step 4: Simplify right side
    107,361.94x = 9,619,514,874.85
  5. Step 5: Solve for x
    x = 9,619,514,874.85/107,361.94
  6. Step 6: Final answer
    x = 89,598.93

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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.