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Finding the Fourth Proportional to 473,611.40, 709,812.30 and 192,811.40

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Solution

The fourth proportional to 473,611.40, 709,812.30 and 192,811.40 is: 288,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,611.40 : 709,812.30 = 192,811.40 : x
  2. Step 2: Convert to fraction form
    473,611.40/709,812.30 = 192,811.40/x
  3. Step 3: Cross multiply
    473,611.40x = 709,812.30 × 192,811.40
  4. Step 4: Simplify right side
    473,611.40x = 136,859,903,300.22
  5. Step 5: Solve for x
    x = 136,859,903,300.22/473,611.40
  6. Step 6: Final answer
    x = 288,970.88

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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.