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Finding the Fourth Proportional to 536,934.20, 805,401.30 and 478,873.40

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Solution

The fourth proportional to 536,934.20, 805,401.30 and 478,873.40 is: 718,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,934.20 : 805,401.30 = 478,873.40 : x
  2. Step 2: Convert to fraction form
    536,934.20/805,401.30 = 478,873.40/x
  3. Step 3: Cross multiply
    536,934.20x = 805,401.30 × 478,873.40
  4. Step 4: Simplify right side
    536,934.20x = 385,685,258,895.42
  5. Step 5: Solve for x
    x = 385,685,258,895.42/536,934.20
  6. Step 6: Final answer
    x = 718,310.10

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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.