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Finding the Fourth Proportional to 523,272.40, 784,966.20 and 190,920.40

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Solution

The fourth proportional to 523,272.40, 784,966.20 and 190,920.40 is: 286,401.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,272.40 : 784,966.20 = 190,920.40 : x
  2. Step 2: Convert to fraction form
    523,272.40/784,966.20 = 190,920.40/x
  3. Step 3: Cross multiply
    523,272.40x = 784,966.20 × 190,920.40
  4. Step 4: Simplify right side
    523,272.40x = 149,866,060,890.48
  5. Step 5: Solve for x
    x = 149,866,060,890.48/523,272.40
  6. Step 6: Final answer
    x = 286,401.62

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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.