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Finding the Fourth Proportional to 10,500.76, 15,751.14 and 8,051.32

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Solution

The fourth proportional to 10,500.76, 15,751.14 and 8,051.32 is: 12,076.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.76 : 15,751.14 = 8,051.32 : x
  2. Step 2: Convert to fraction form
    10,500.76/15,751.14 = 8,051.32/x
  3. Step 3: Cross multiply
    10,500.76x = 15,751.14 × 8,051.32
  4. Step 4: Simplify right side
    10,500.76x = 126,817,468.50
  5. Step 5: Solve for x
    x = 126,817,468.50/10,500.76
  6. Step 6: Final answer
    x = 12,076.98

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1.5x scale

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.