Home / 28,998,378.78-40,017,459.47-21,589,169.67

Finding the Fourth Proportional to 28,998,378.78, 40,017,459.47 and 21,589,169.67

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Solution

The fourth proportional to 28,998,378.78, 40,017,459.47 and 21,589,169.67 is: 29,792,828.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998,378.78 : 40,017,459.47 = 21,589,169.67 : x
  2. Step 2: Convert to fraction form
    28,998,378.78/40,017,459.47 = 21,589,169.67/x
  3. Step 3: Cross multiply
    28,998,378.78x = 40,017,459.47 × 21,589,169.67
  4. Step 4: Simplify right side
    28,998,378.78x = 863,943,722,152,232.62
  5. Step 5: Solve for x
    x = 863,943,722,152,232.62/28,998,378.78
  6. Step 6: Final answer
    x = 29,792,828.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.