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Finding the Fourth Proportional to 613,973,854.80, 920,960,782.20 and 337,518,246.60

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Solution

The fourth proportional to 613,973,854.80, 920,960,782.20 and 337,518,246.60 is: 506,277,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,973,854.80 : 920,960,782.20 = 337,518,246.60 : x
  2. Step 2: Convert to fraction form
    613,973,854.80/920,960,782.20 = 337,518,246.60/x
  3. Step 3: Cross multiply
    613,973,854.80x = 920,960,782.20 × 337,518,246.60
  4. Step 4: Simplify right side
    613,973,854.80x = 310,841,068,395,508,544
  5. Step 5: Solve for x
    x = 310,841,068,395,508,544/613,973,854.80
  6. Step 6: Final answer
    x = 506,277,369.90

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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.