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Finding the Fourth Proportional to 365,671.55, 548,409.04 and 128,983.07

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Solution

The fourth proportional to 365,671.55, 548,409.04 and 128,983.07 is: 193,439.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,671.55 : 548,409.04 = 128,983.07 : x
  2. Step 2: Convert to fraction form
    365,671.55/548,409.04 = 128,983.07/x
  3. Step 3: Cross multiply
    365,671.55x = 548,409.04 × 128,983.07
  4. Step 4: Simplify right side
    365,671.55x = 70,735,482,643.52
  5. Step 5: Solve for x
    x = 70,735,482,643.52/365,671.55
  6. Step 6: Final answer
    x = 193,439.94

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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.