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Finding the Fourth Proportional to 4,699.50, 7,051.68 and 2,391

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Solution

The fourth proportional to 4,699.50, 7,051.68 and 2,391 is: 3,587.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.50 : 7,051.68 = 2,391 : x
  2. Step 2: Convert to fraction form
    4,699.50/7,051.68 = 2,391/x
  3. Step 3: Cross multiply
    4,699.50x = 7,051.68 × 2,391
  4. Step 4: Simplify right side
    4,699.50x = 16,860,566.88
  5. Step 5: Solve for x
    x = 16,860,566.88/4,699.50
  6. Step 6: Final answer
    x = 3,587.74

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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.