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Finding the Fourth Proportional to 104,500.30, 156,750.45 and 77,889.10

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Solution

The fourth proportional to 104,500.30, 156,750.45 and 77,889.10 is: 116,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,500.30 : 156,750.45 = 77,889.10 : x
  2. Step 2: Convert to fraction form
    104,500.30/156,750.45 = 77,889.10/x
  3. Step 3: Cross multiply
    104,500.30x = 156,750.45 × 77,889.10
  4. Step 4: Simplify right side
    104,500.30x = 12,209,151,475.10
  5. Step 5: Solve for x
    x = 12,209,151,475.10/104,500.30
  6. Step 6: Final answer
    x = 116,833.65

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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.