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Finding the Fourth Proportional to 116,645.30, 174,967.95 and 80,875.70

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Solution

The fourth proportional to 116,645.30, 174,967.95 and 80,875.70 is: 121,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,645.30 : 174,967.95 = 80,875.70 : x
  2. Step 2: Convert to fraction form
    116,645.30/174,967.95 = 80,875.70/x
  3. Step 3: Cross multiply
    116,645.30x = 174,967.95 × 80,875.70
  4. Step 4: Simplify right side
    116,645.30x = 14,150,655,433.82
  5. Step 5: Solve for x
    x = 14,150,655,433.82/116,645.30
  6. Step 6: Final answer
    x = 121,313.55

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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.