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Finding the Fourth Proportional to 121,026.46, 166,970.70 and 75,064.84

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Solution

The fourth proportional to 121,026.46, 166,970.70 and 75,064.84 is: 103,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,026.46 : 166,970.70 = 75,064.84 : x
  2. Step 2: Convert to fraction form
    121,026.46/166,970.70 = 75,064.84/x
  3. Step 3: Cross multiply
    121,026.46x = 166,970.70 × 75,064.84
  4. Step 4: Simplify right side
    121,026.46x = 12,533,628,880.19
  5. Step 5: Solve for x
    x = 12,533,628,880.19/121,026.46
  6. Step 6: Final answer
    x = 103,561.06

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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.