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Finding the Fourth Proportional to 331,653.93, 457,683.97 and 188,421.83

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Solution

The fourth proportional to 331,653.93, 457,683.97 and 188,421.83 is: 260,023.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,653.93 : 457,683.97 = 188,421.83 : x
  2. Step 2: Convert to fraction form
    331,653.93/457,683.97 = 188,421.83/x
  3. Step 3: Cross multiply
    331,653.93x = 457,683.97 × 188,421.83
  4. Step 4: Simplify right side
    331,653.93x = 86,237,651,862.22
  5. Step 5: Solve for x
    x = 86,237,651,862.22/331,653.93
  6. Step 6: Final answer
    x = 260,023.01

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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.