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Finding the Fourth Proportional to 548,117.40, 822,176.10 and 423,547.80

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Solution

The fourth proportional to 548,117.40, 822,176.10 and 423,547.80 is: 635,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,117.40 : 822,176.10 = 423,547.80 : x
  2. Step 2: Convert to fraction form
    548,117.40/822,176.10 = 423,547.80/x
  3. Step 3: Cross multiply
    548,117.40x = 822,176.10 × 423,547.80
  4. Step 4: Simplify right side
    548,117.40x = 348,230,878,367.58
  5. Step 5: Solve for x
    x = 348,230,878,367.58/548,117.40
  6. Step 6: Final answer
    x = 635,321.70

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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.