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Finding the Fourth Proportional to 255,561.92, 383,361.42 and 103,686.08

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Solution

The fourth proportional to 255,561.92, 383,361.42 and 103,686.08 is: 155,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,561.92 : 383,361.42 = 103,686.08 : x
  2. Step 2: Convert to fraction form
    255,561.92/383,361.42 = 103,686.08/x
  3. Step 3: Cross multiply
    255,561.92x = 383,361.42 × 103,686.08
  4. Step 4: Simplify right side
    255,561.92x = 39,749,242,863.03
  5. Step 5: Solve for x
    x = 39,749,242,863.03/255,561.92
  6. Step 6: Final answer
    x = 155,536.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.