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Finding the Fourth Proportional to 155,892,530.30, 218,607,860.50 and 155,892,530.30

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Solution

The fourth proportional to 155,892,530.30, 218,607,860.50 and 155,892,530.30 is: 218,607,860.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,892,530.30 : 218,607,860.50 = 155,892,530.30 : x
  2. Step 2: Convert to fraction form
    155,892,530.30/218,607,860.50 = 155,892,530.30/x
  3. Step 3: Cross multiply
    155,892,530.30x = 218,607,860.50 × 155,892,530.30
  4. Step 4: Simplify right side
    155,892,530.30x = 34,079,332,516,814,424
  5. Step 5: Solve for x
    x = 34,079,332,516,814,424/155,892,530.30
  6. Step 6: Final answer
    x = 218,607,860.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.