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Finding the Fourth Proportional to 213,255,087.90, 319,404,334.95 and 213,255,087.90

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Solution

The fourth proportional to 213,255,087.90, 319,404,334.95 and 213,255,087.90 is: 319,404,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,255,087.90 : 319,404,334.95 = 213,255,087.90 : x
  2. Step 2: Convert to fraction form
    213,255,087.90/319,404,334.95 = 213,255,087.90/x
  3. Step 3: Cross multiply
    213,255,087.90x = 319,404,334.95 × 213,255,087.90
  4. Step 4: Simplify right side
    213,255,087.90x = 68,114,599,525,403,288
  5. Step 5: Solve for x
    x = 68,114,599,525,403,288/213,255,087.90
  6. Step 6: Final answer
    x = 319,404,334.95

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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.