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Finding the Fourth Proportional to 39,590,998.70, 55,502,980.90 and 39,590,998.70

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Solution

The fourth proportional to 39,590,998.70, 55,502,980.90 and 39,590,998.70 is: 55,502,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,590,998.70 : 55,502,980.90 = 39,590,998.70 : x
  2. Step 2: Convert to fraction form
    39,590,998.70/55,502,980.90 = 39,590,998.70/x
  3. Step 3: Cross multiply
    39,590,998.70x = 55,502,980.90 × 39,590,998.70
  4. Step 4: Simplify right side
    39,590,998.70x = 2,197,418,444,658,025
  5. Step 5: Solve for x
    x = 2,197,418,444,658,025/39,590,998.70
  6. Step 6: Final answer
    x = 55,502,980.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.