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Finding the Fourth Proportional to 555,411.40, 833,117.10 and 512,108.80

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Solution

The fourth proportional to 555,411.40, 833,117.10 and 512,108.80 is: 768,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,411.40 : 833,117.10 = 512,108.80 : x
  2. Step 2: Convert to fraction form
    555,411.40/833,117.10 = 512,108.80/x
  3. Step 3: Cross multiply
    555,411.40x = 833,117.10 × 512,108.80
  4. Step 4: Simplify right side
    555,411.40x = 426,646,598,340.48
  5. Step 5: Solve for x
    x = 426,646,598,340.48/555,411.40
  6. Step 6: Final answer
    x = 768,163.20

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Double scale
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Similar ratio
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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.