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Finding the Fourth Proportional to 119,071.53, 164,320.84 and 65,361.55

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Solution

The fourth proportional to 119,071.53, 164,320.84 and 65,361.55 is: 90,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,071.53 : 164,320.84 = 65,361.55 : x
  2. Step 2: Convert to fraction form
    119,071.53/164,320.84 = 65,361.55/x
  3. Step 3: Cross multiply
    119,071.53x = 164,320.84 × 65,361.55
  4. Step 4: Simplify right side
    119,071.53x = 10,740,263,651.29
  5. Step 5: Solve for x
    x = 10,740,263,651.29/119,071.53
  6. Step 6: Final answer
    x = 90,200.10

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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.