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Finding the Fourth Proportional to 431,208,596.20, 646,812,894.30 and 431,208,596.20

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Solution

The fourth proportional to 431,208,596.20, 646,812,894.30 and 431,208,596.20 is: 646,812,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,208,596.20 : 646,812,894.30 = 431,208,596.20 : x
  2. Step 2: Convert to fraction form
    431,208,596.20/646,812,894.30 = 431,208,596.20/x
  3. Step 3: Cross multiply
    431,208,596.20x = 646,812,894.30 × 431,208,596.20
  4. Step 4: Simplify right side
    431,208,596.20x = 278,911,280,155,161,952
  5. Step 5: Solve for x
    x = 278,911,280,155,161,952/431,208,596.20
  6. Step 6: Final answer
    x = 646,812,894.30

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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.