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Finding the Fourth Proportional to 4,920,715,028,715.90, 7,381,072,543,073.90 and 4,920,715,028,715.90

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Solution

The fourth proportional to 4,920,715,028,715.90, 7,381,072,543,073.90 and 4,920,715,028,715.90 is: 7,381,072,543,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920,715,028,715.90 : 7,381,072,543,073.90 = 4,920,715,028,715.90 : x
  2. Step 2: Convert to fraction form
    4,920,715,028,715.90/7,381,072,543,073.90 = 4,920,715,028,715.90/x
  3. Step 3: Cross multiply
    4,920,715,028,715.90x = 7,381,072,543,073.90 × 4,920,715,028,715.90
  4. Step 4: Simplify right side
    4,920,715,028,715.90x = 36,320,154,590,746,029,919,830,016
  5. Step 5: Solve for x
    x = 36,320,154,590,746,029,919,830,016/4,920,715,028,715.90
  6. Step 6: Final answer
    x = 7,381,072,543,073.90

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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.