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Finding the Fourth Proportional to 187,859.60, 259,256.90 and 111,423.96

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Solution

The fourth proportional to 187,859.60, 259,256.90 and 111,423.96 is: 153,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,859.60 : 259,256.90 = 111,423.96 : x
  2. Step 2: Convert to fraction form
    187,859.60/259,256.90 = 111,423.96/x
  3. Step 3: Cross multiply
    187,859.60x = 259,256.90 × 111,423.96
  4. Step 4: Simplify right side
    187,859.60x = 28,887,430,455.32
  5. Step 5: Solve for x
    x = 28,887,430,455.32/187,859.60
  6. Step 6: Final answer
    x = 153,771.38

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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.