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Finding the Fourth Proportional to 8,723,710.80, 13,087,639.80 and 3,672,421.20

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Solution

The fourth proportional to 8,723,710.80, 13,087,639.80 and 3,672,421.20 is: 5,509,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723,710.80 : 13,087,639.80 = 3,672,421.20 : x
  2. Step 2: Convert to fraction form
    8,723,710.80/13,087,639.80 = 3,672,421.20/x
  3. Step 3: Cross multiply
    8,723,710.80x = 13,087,639.80 × 3,672,421.20
  4. Step 4: Simplify right side
    8,723,710.80x = 48,063,325,859,483.77
  5. Step 5: Solve for x
    x = 48,063,325,859,483.77/8,723,710.80
  6. Step 6: Final answer
    x = 5,509,504.72

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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.