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Finding the Fourth Proportional to 66,872,705.90, 100,309,058.85 and 66,872,705.90

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Solution

The fourth proportional to 66,872,705.90, 100,309,058.85 and 66,872,705.90 is: 100,309,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872,705.90 : 100,309,058.85 = 66,872,705.90 : x
  2. Step 2: Convert to fraction form
    66,872,705.90/100,309,058.85 = 66,872,705.90/x
  3. Step 3: Cross multiply
    66,872,705.90x = 100,309,058.85 × 66,872,705.90
  4. Step 4: Simplify right side
    66,872,705.90x = 6,707,938,191,581,842
  5. Step 5: Solve for x
    x = 6,707,938,191,581,842/66,872,705.90
  6. Step 6: Final answer
    x = 100,309,058.85

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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.