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Finding the Fourth Proportional to 79,816,492.80, 119,771,978.40 and 52,601,464.80

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Solution

The fourth proportional to 79,816,492.80, 119,771,978.40 and 52,601,464.80 is: 78,933,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,816,492.80 : 119,771,978.40 = 52,601,464.80 : x
  2. Step 2: Convert to fraction form
    79,816,492.80/119,771,978.40 = 52,601,464.80/x
  3. Step 3: Cross multiply
    79,816,492.80x = 119,771,978.40 × 52,601,464.80
  4. Step 4: Simplify right side
    79,816,492.80x = 6,300,181,505,833,960
  5. Step 5: Solve for x
    x = 6,300,181,505,833,960/79,816,492.80
  6. Step 6: Final answer
    x = 78,933,329.25

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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.