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Finding the Fourth Proportional to 82,387,458.60, 123,581,187.90 and 63,314,485.80

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Solution

The fourth proportional to 82,387,458.60, 123,581,187.90 and 63,314,485.80 is: 94,971,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,387,458.60 : 123,581,187.90 = 63,314,485.80 : x
  2. Step 2: Convert to fraction form
    82,387,458.60/123,581,187.90 = 63,314,485.80/x
  3. Step 3: Cross multiply
    82,387,458.60x = 123,581,187.90 × 63,314,485.80
  4. Step 4: Simplify right side
    82,387,458.60x = 7,824,479,366,441,682
  5. Step 5: Solve for x
    x = 7,824,479,366,441,682/82,387,458.60
  6. Step 6: Final answer
    x = 94,971,728.70

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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.