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Finding the Fourth Proportional to 543,512.40, 811,608.72 and 443,870.40

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Solution

The fourth proportional to 543,512.40, 811,608.72 and 443,870.40 is: 662,816.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,512.40 : 811,608.72 = 443,870.40 : x
  2. Step 2: Convert to fraction form
    543,512.40/811,608.72 = 443,870.40/x
  3. Step 3: Cross multiply
    543,512.40x = 811,608.72 × 443,870.40
  4. Step 4: Simplify right side
    543,512.40x = 360,249,087,189.89
  5. Step 5: Solve for x
    x = 360,249,087,189.89/543,512.40
  6. Step 6: Final answer
    x = 662,816.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.