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Finding the Fourth Proportional to 108,527.10, 162,790.65 and 91,031.10

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Solution

The fourth proportional to 108,527.10, 162,790.65 and 91,031.10 is: 136,546.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,527.10 : 162,790.65 = 91,031.10 : x
  2. Step 2: Convert to fraction form
    108,527.10/162,790.65 = 91,031.10/x
  3. Step 3: Cross multiply
    108,527.10x = 162,790.65 × 91,031.10
  4. Step 4: Simplify right side
    108,527.10x = 14,819,011,939.22
  5. Step 5: Solve for x
    x = 14,819,011,939.22/108,527.10
  6. Step 6: Final answer
    x = 136,546.65

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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.