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Finding the Fourth Proportional to 255,700.96, 383,551.12 and 68,712.48

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Solution

The fourth proportional to 255,700.96, 383,551.12 and 68,712.48 is: 103,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,700.96 : 383,551.12 = 68,712.48 : x
  2. Step 2: Convert to fraction form
    255,700.96/383,551.12 = 68,712.48/x
  3. Step 3: Cross multiply
    255,700.96x = 383,551.12 × 68,712.48
  4. Step 4: Simplify right side
    255,700.96x = 26,354,748,661.98
  5. Step 5: Solve for x
    x = 26,354,748,661.98/255,700.96
  6. Step 6: Final answer
    x = 103,068.63

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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.