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Finding the Fourth Proportional to 661,652,155.72, 992,626,249.74 and 201,626,328.52

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Solution

The fourth proportional to 661,652,155.72, 992,626,249.74 and 201,626,328.52 is: 302,484,597.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,652,155.72 : 992,626,249.74 = 201,626,328.52 : x
  2. Step 2: Convert to fraction form
    661,652,155.72/992,626,249.74 = 201,626,328.52/x
  3. Step 3: Cross multiply
    661,652,155.72x = 992,626,249.74 × 201,626,328.52
  4. Step 4: Simplify right side
    661,652,155.72x = 200,139,586,327,652,832
  5. Step 5: Solve for x
    x = 200,139,586,327,652,832/661,652,155.72
  6. Step 6: Final answer
    x = 302,484,597.98

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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.