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Finding the Fourth Proportional to 90,684,990.90, 136,027,486.35 and 90,684,990.90

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Solution

The fourth proportional to 90,684,990.90, 136,027,486.35 and 90,684,990.90 is: 136,027,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684,990.90 : 136,027,486.35 = 90,684,990.90 : x
  2. Step 2: Convert to fraction form
    90,684,990.90/136,027,486.35 = 90,684,990.90/x
  3. Step 3: Cross multiply
    90,684,990.90x = 136,027,486.35 × 90,684,990.90
  4. Step 4: Simplify right side
    90,684,990.90x = 12,335,651,361,799,624
  5. Step 5: Solve for x
    x = 12,335,651,361,799,624/90,684,990.90
  6. Step 6: Final answer
    x = 136,027,486.35

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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.