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Finding the Fourth Proportional to 581,007.76, 871,315.64 and 221,093.16

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Solution

The fourth proportional to 581,007.76, 871,315.64 and 221,093.16 is: 331,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,007.76 : 871,315.64 = 221,093.16 : x
  2. Step 2: Convert to fraction form
    581,007.76/871,315.64 = 221,093.16/x
  3. Step 3: Cross multiply
    581,007.76x = 871,315.64 × 221,093.16
  4. Step 4: Simplify right side
    581,007.76x = 192,641,928,205.02
  5. Step 5: Solve for x
    x = 192,641,928,205.02/581,007.76
  6. Step 6: Final answer
    x = 331,565.16

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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.