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Finding the Fourth Proportional to 128,095.34, 191,885.54 and 63,859.64

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Solution

The fourth proportional to 128,095.34, 191,885.54 and 63,859.64 is: 95,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,095.34 : 191,885.54 = 63,859.64 : x
  2. Step 2: Convert to fraction form
    128,095.34/191,885.54 = 63,859.64/x
  3. Step 3: Cross multiply
    128,095.34x = 191,885.54 × 63,859.64
  4. Step 4: Simplify right side
    128,095.34x = 12,253,741,505.61
  5. Step 5: Solve for x
    x = 12,253,741,505.61/128,095.34
  6. Step 6: Final answer
    x = 95,661.10

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1.5x scale

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.