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Finding the Fourth Proportional to 702,368,402.76, 969,197,755.68 and 389,044,075.32

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Solution

The fourth proportional to 702,368,402.76, 969,197,755.68 and 389,044,075.32 is: 536,841,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,368,402.76 : 969,197,755.68 = 389,044,075.32 : x
  2. Step 2: Convert to fraction form
    702,368,402.76/969,197,755.68 = 389,044,075.32/x
  3. Step 3: Cross multiply
    702,368,402.76x = 969,197,755.68 × 389,044,075.32
  4. Step 4: Simplify right side
    702,368,402.76x = 377,060,644,660,744,832
  5. Step 5: Solve for x
    x = 377,060,644,660,744,832/702,368,402.76
  6. Step 6: Final answer
    x = 536,841,696.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.