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Finding the Fourth Proportional to 8,603,705.64, 12,905,501.06 and 3,486,060.03

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Solution

The fourth proportional to 8,603,705.64, 12,905,501.06 and 3,486,060.03 is: 5,229,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603,705.64 : 12,905,501.06 = 3,486,060.03 : x
  2. Step 2: Convert to fraction form
    8,603,705.64/12,905,501.06 = 3,486,060.03/x
  3. Step 3: Cross multiply
    8,603,705.64x = 12,905,501.06 × 3,486,060.03
  4. Step 4: Simplify right side
    8,603,705.64x = 44,989,351,469,499.41
  5. Step 5: Solve for x
    x = 44,989,351,469,499.41/8,603,705.64
  6. Step 6: Final answer
    x = 5,229,066.79

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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.