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Finding the Fourth Proportional to 351,703.85, 527,448.05 and 127,036.58

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Solution

The fourth proportional to 351,703.85, 527,448.05 and 127,036.58 is: 190,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,703.85 : 527,448.05 = 127,036.58 : x
  2. Step 2: Convert to fraction form
    351,703.85/527,448.05 = 127,036.58/x
  3. Step 3: Cross multiply
    351,703.85x = 527,448.05 × 127,036.58
  4. Step 4: Simplify right side
    351,703.85x = 67,005,196,399.67
  5. Step 5: Solve for x
    x = 67,005,196,399.67/351,703.85
  6. Step 6: Final answer
    x = 190,515.96

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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.