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Finding the Fourth Proportional to 524,063.20, 786,440.40 and 191,639.20

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Solution

The fourth proportional to 524,063.20, 786,440.40 and 191,639.20 is: 287,585.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,063.20 : 786,440.40 = 191,639.20 : x
  2. Step 2: Convert to fraction form
    524,063.20/786,440.40 = 191,639.20/x
  3. Step 3: Cross multiply
    524,063.20x = 786,440.40 × 191,639.20
  4. Step 4: Simplify right side
    524,063.20x = 150,712,809,103.68
  5. Step 5: Solve for x
    x = 150,712,809,103.68/524,063.20
  6. Step 6: Final answer
    x = 287,585.18

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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.