Home / 18,786,857.61-28,139,796.66-12,688,052.67

Finding the Fourth Proportional to 18,786,857.61, 28,139,796.66 and 12,688,052.67

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Solution

The fourth proportional to 18,786,857.61, 28,139,796.66 and 12,688,052.67 is: 19,004,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786,857.61 : 28,139,796.66 = 12,688,052.67 : x
  2. Step 2: Convert to fraction form
    18,786,857.61/28,139,796.66 = 12,688,052.67/x
  3. Step 3: Cross multiply
    18,786,857.61x = 28,139,796.66 × 12,688,052.67
  4. Step 4: Simplify right side
    18,786,857.61x = 357,039,222,145,170.06
  5. Step 5: Solve for x
    x = 357,039,222,145,170.06/18,786,857.61
  6. Step 6: Final answer
    x = 19,004,733.50

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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.