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Finding the Fourth Proportional to 131,438.70, 184,364.10 and 131,438.70

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Solution

The fourth proportional to 131,438.70, 184,364.10 and 131,438.70 is: 184,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.70 : 184,364.10 = 131,438.70 : x
  2. Step 2: Convert to fraction form
    131,438.70/184,364.10 = 131,438.70/x
  3. Step 3: Cross multiply
    131,438.70x = 184,364.10 × 131,438.70
  4. Step 4: Simplify right side
    131,438.70x = 24,232,577,630.67
  5. Step 5: Solve for x
    x = 24,232,577,630.67/131,438.70
  6. Step 6: Final answer
    x = 184,364.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.