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Finding the Fourth Proportional to 189,503,999.60, 284,255,999.40 and 186,480,690.80

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Solution

The fourth proportional to 189,503,999.60, 284,255,999.40 and 186,480,690.80 is: 279,721,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,503,999.60 : 284,255,999.40 = 186,480,690.80 : x
  2. Step 2: Convert to fraction form
    189,503,999.60/284,255,999.40 = 186,480,690.80/x
  3. Step 3: Cross multiply
    189,503,999.60x = 284,255,999.40 × 186,480,690.80
  4. Step 4: Simplify right side
    189,503,999.60x = 53,008,255,132,156,384
  5. Step 5: Solve for x
    x = 53,008,255,132,156,384/189,503,999.60
  6. Step 6: Final answer
    x = 279,721,036.20

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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.