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Finding the Fourth Proportional to 393,746.81, 543,411.41 and 240,886.80

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Solution

The fourth proportional to 393,746.81, 543,411.41 and 240,886.80 is: 332,448.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,746.81 : 543,411.41 = 240,886.80 : x
  2. Step 2: Convert to fraction form
    393,746.81/543,411.41 = 240,886.80/x
  3. Step 3: Cross multiply
    393,746.81x = 543,411.41 × 240,886.80
  4. Step 4: Simplify right side
    393,746.81x = 130,900,634,433.95
  5. Step 5: Solve for x
    x = 130,900,634,433.95/393,746.81
  6. Step 6: Final answer
    x = 332,448.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.