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Finding the Fourth Proportional to 8,972,707.80, 13,459,061.70 and 5,193,571.80

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Solution

The fourth proportional to 8,972,707.80, 13,459,061.70 and 5,193,571.80 is: 7,790,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972,707.80 : 13,459,061.70 = 5,193,571.80 : x
  2. Step 2: Convert to fraction form
    8,972,707.80/13,459,061.70 = 5,193,571.80/x
  3. Step 3: Cross multiply
    8,972,707.80x = 13,459,061.70 × 5,193,571.80
  4. Step 4: Simplify right side
    8,972,707.80x = 69,900,603,299,580.05
  5. Step 5: Solve for x
    x = 69,900,603,299,580.05/8,972,707.80
  6. Step 6: Final answer
    x = 7,790,357.70

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1.5x scale

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.