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Finding the Fourth Proportional to 559,876,946.80, 839,815,420.20 and 253,179,065.20

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Solution

The fourth proportional to 559,876,946.80, 839,815,420.20 and 253,179,065.20 is: 379,768,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,876,946.80 : 839,815,420.20 = 253,179,065.20 : x
  2. Step 2: Convert to fraction form
    559,876,946.80/839,815,420.20 = 253,179,065.20/x
  3. Step 3: Cross multiply
    559,876,946.80x = 839,815,420.20 × 253,179,065.20
  4. Step 4: Simplify right side
    559,876,946.80x = 212,623,683,026,781,184
  5. Step 5: Solve for x
    x = 212,623,683,026,781,184/559,876,946.80
  6. Step 6: Final answer
    x = 379,768,597.80

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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.