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Finding the Fourth Proportional to 10,703.76, 16,055.64 and 8,875.92

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Solution

The fourth proportional to 10,703.76, 16,055.64 and 8,875.92 is: 13,313.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,703.76 : 16,055.64 = 8,875.92 : x
  2. Step 2: Convert to fraction form
    10,703.76/16,055.64 = 8,875.92/x
  3. Step 3: Cross multiply
    10,703.76x = 16,055.64 × 8,875.92
  4. Step 4: Simplify right side
    10,703.76x = 142,508,576.19
  5. Step 5: Solve for x
    x = 142,508,576.19/10,703.76
  6. Step 6: Final answer
    x = 13,313.88

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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.