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Finding the Fourth Proportional to 679,072,502.70, 1,018,608,754.05 and 679,072,502.70

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Solution

The fourth proportional to 679,072,502.70, 1,018,608,754.05 and 679,072,502.70 is: 1,018,608,754.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,072,502.70 : 1,018,608,754.05 = 679,072,502.70 : x
  2. Step 2: Convert to fraction form
    679,072,502.70/1,018,608,754.05 = 679,072,502.70/x
  3. Step 3: Cross multiply
    679,072,502.70x = 1,018,608,754.05 × 679,072,502.70
  4. Step 4: Simplify right side
    679,072,502.70x = 691,709,195,884,862,336
  5. Step 5: Solve for x
    x = 691,709,195,884,862,336/679,072,502.70
  6. Step 6: Final answer
    x = 1,018,608,754.05

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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.