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Finding the Fourth Proportional to 128,666.86, 193,039.36 and 62,094.58

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Solution

The fourth proportional to 128,666.86, 193,039.36 and 62,094.58 is: 93,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,666.86 : 193,039.36 = 62,094.58 : x
  2. Step 2: Convert to fraction form
    128,666.86/193,039.36 = 62,094.58/x
  3. Step 3: Cross multiply
    128,666.86x = 193,039.36 × 62,094.58
  4. Step 4: Simplify right side
    128,666.86x = 11,986,697,982.67
  5. Step 5: Solve for x
    x = 11,986,697,982.67/128,666.86
  6. Step 6: Final answer
    x = 93,160.73

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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.