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Finding the Fourth Proportional to 76,193.40, 114,030.90 and 66,862.20

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Solution

The fourth proportional to 76,193.40, 114,030.90 and 66,862.20 is: 100,065.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,193.40 : 114,030.90 = 66,862.20 : x
  2. Step 2: Convert to fraction form
    76,193.40/114,030.90 = 66,862.20/x
  3. Step 3: Cross multiply
    76,193.40x = 114,030.90 × 66,862.20
  4. Step 4: Simplify right side
    76,193.40x = 7,624,356,841.98
  5. Step 5: Solve for x
    x = 7,624,356,841.98/76,193.40
  6. Step 6: Final answer
    x = 100,065.84

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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.