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Finding the Fourth Proportional to 460,797.19, 691,312.46 and 128,373.19

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Solution

The fourth proportional to 460,797.19, 691,312.46 and 128,373.19 is: 192,592.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,797.19 : 691,312.46 = 128,373.19 : x
  2. Step 2: Convert to fraction form
    460,797.19/691,312.46 = 128,373.19/x
  3. Step 3: Cross multiply
    460,797.19x = 691,312.46 × 128,373.19
  4. Step 4: Simplify right side
    460,797.19x = 88,745,983,406.80
  5. Step 5: Solve for x
    x = 88,745,983,406.80/460,797.19
  6. Step 6: Final answer
    x = 192,592.29

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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.