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Finding the Fourth Proportional to 536,421.76, 804,632.52 and 137,063.28

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Solution

The fourth proportional to 536,421.76, 804,632.52 and 137,063.28 is: 205,594.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,421.76 : 804,632.52 = 137,063.28 : x
  2. Step 2: Convert to fraction form
    536,421.76/804,632.52 = 137,063.28/x
  3. Step 3: Cross multiply
    536,421.76x = 804,632.52 × 137,063.28
  4. Step 4: Simplify right side
    536,421.76x = 110,285,572,385.87
  5. Step 5: Solve for x
    x = 110,285,572,385.87/536,421.76
  6. Step 6: Final answer
    x = 205,594.89

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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.