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Finding the Fourth Proportional to 397,790,999.40, 596,686,499.10 and 397,790,999.40

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Solution

The fourth proportional to 397,790,999.40, 596,686,499.10 and 397,790,999.40 is: 596,686,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,790,999.40 : 596,686,499.10 = 397,790,999.40 : x
  2. Step 2: Convert to fraction form
    397,790,999.40/596,686,499.10 = 397,790,999.40/x
  3. Step 3: Cross multiply
    397,790,999.40x = 596,686,499.10 × 397,790,999.40
  4. Step 4: Simplify right side
    397,790,999.40x = 237,356,518,805,476,192
  5. Step 5: Solve for x
    x = 237,356,518,805,476,192/397,790,999.40
  6. Step 6: Final answer
    x = 596,686,499.10

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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.