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Finding the Fourth Proportional to 121,029, 167,025.94 and 67,312.87

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Solution

The fourth proportional to 121,029, 167,025.94 and 67,312.87 is: 92,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029 : 167,025.94 = 67,312.87 : x
  2. Step 2: Convert to fraction form
    121,029/167,025.94 = 67,312.87/x
  3. Step 3: Cross multiply
    121,029x = 167,025.94 × 67,312.87
  4. Step 4: Simplify right side
    121,029x = 11,242,995,385.85
  5. Step 5: Solve for x
    x = 11,242,995,385.85/121,029
  6. Step 6: Final answer
    x = 92,895.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.