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Finding the Fourth Proportional to 191,076.96, 286,641.36 and 66,401.76

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Solution

The fourth proportional to 191,076.96, 286,641.36 and 66,401.76 is: 99,611.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,076.96 : 286,641.36 = 66,401.76 : x
  2. Step 2: Convert to fraction form
    191,076.96/286,641.36 = 66,401.76/x
  3. Step 3: Cross multiply
    191,076.96x = 286,641.36 × 66,401.76
  4. Step 4: Simplify right side
    191,076.96x = 19,033,490,792.79
  5. Step 5: Solve for x
    x = 19,033,490,792.79/191,076.96
  6. Step 6: Final answer
    x = 99,611.65

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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.