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Finding the Fourth Proportional to 11,700,603.40, 17,529,909.90 and 10,020,987.40

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Solution

The fourth proportional to 11,700,603.40, 17,529,909.90 and 10,020,987.40 is: 15,013,499.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700,603.40 : 17,529,909.90 = 10,020,987.40 : x
  2. Step 2: Convert to fraction form
    11,700,603.40/17,529,909.90 = 10,020,987.40/x
  3. Step 3: Cross multiply
    11,700,603.40x = 17,529,909.90 × 10,020,987.40
  4. Step 4: Simplify right side
    11,700,603.40x = 175,667,006,231,035.25
  5. Step 5: Solve for x
    x = 175,667,006,231,035.25/11,700,603.40
  6. Step 6: Final answer
    x = 15,013,499.75

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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.