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Finding the Fourth Proportional to 228,925.08, 315,936.59 and 133,429.73

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Solution

The fourth proportional to 228,925.08, 315,936.59 and 133,429.73 is: 184,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,925.08 : 315,936.59 = 133,429.73 : x
  2. Step 2: Convert to fraction form
    228,925.08/315,936.59 = 133,429.73/x
  3. Step 3: Cross multiply
    228,925.08x = 315,936.59 × 133,429.73
  4. Step 4: Simplify right side
    228,925.08x = 42,155,331,653.99
  5. Step 5: Solve for x
    x = 42,155,331,653.99/228,925.08
  6. Step 6: Final answer
    x = 184,144.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.