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Finding the Fourth Proportional to 559,876,941.80, 839,815,412.70 and 253,179,060.20

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Solution

The fourth proportional to 559,876,941.80, 839,815,412.70 and 253,179,060.20 is: 379,768,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,876,941.80 : 839,815,412.70 = 253,179,060.20 : x
  2. Step 2: Convert to fraction form
    559,876,941.80/839,815,412.70 = 253,179,060.20/x
  3. Step 3: Cross multiply
    559,876,941.80x = 839,815,412.70 × 253,179,060.20
  4. Step 4: Simplify right side
    559,876,941.80x = 212,623,676,928,861,152
  5. Step 5: Solve for x
    x = 212,623,676,928,861,152/559,876,941.80
  6. Step 6: Final answer
    x = 379,768,590.30

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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.