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Finding the Fourth Proportional to 387,930,603.60, 581,895,905.40 and 387,930,603.60

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Solution

The fourth proportional to 387,930,603.60, 581,895,905.40 and 387,930,603.60 is: 581,895,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,930,603.60 : 581,895,905.40 = 387,930,603.60 : x
  2. Step 2: Convert to fraction form
    387,930,603.60/581,895,905.40 = 387,930,603.60/x
  3. Step 3: Cross multiply
    387,930,603.60x = 581,895,905.40 × 387,930,603.60
  4. Step 4: Simplify right side
    387,930,603.60x = 225,735,229,814,190,496
  5. Step 5: Solve for x
    x = 225,735,229,814,190,496/387,930,603.60
  6. Step 6: Final answer
    x = 581,895,905.40

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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.