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Finding the Fourth Proportional to 993,191,721.60, 1,489,787,582.40 and 993,191,721.60

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Solution

The fourth proportional to 993,191,721.60, 1,489,787,582.40 and 993,191,721.60 is: 1,489,787,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,191,721.60 : 1,489,787,582.40 = 993,191,721.60 : x
  2. Step 2: Convert to fraction form
    993,191,721.60/1,489,787,582.40 = 993,191,721.60/x
  3. Step 3: Cross multiply
    993,191,721.60x = 1,489,787,582.40 × 993,191,721.60
  4. Step 4: Simplify right side
    993,191,721.60x = 1,479,644,693,782,158,080
  5. Step 5: Solve for x
    x = 1,479,644,693,782,158,080/993,191,721.60
  6. Step 6: Final answer
    x = 1,489,787,582.40

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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.