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Finding the Fourth Proportional to 101,353.64, 139,880.19 and 58,912.18

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Solution

The fourth proportional to 101,353.64, 139,880.19 and 58,912.18 is: 81,305.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,353.64 : 139,880.19 = 58,912.18 : x
  2. Step 2: Convert to fraction form
    101,353.64/139,880.19 = 58,912.18/x
  3. Step 3: Cross multiply
    101,353.64x = 139,880.19 × 58,912.18
  4. Step 4: Simplify right side
    101,353.64x = 8,240,646,931.71
  5. Step 5: Solve for x
    x = 8,240,646,931.71/101,353.64
  6. Step 6: Final answer
    x = 81,305.88

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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.