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Finding the Fourth Proportional to 185,792.76, 256,385.42 and 105,220.87

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Solution

The fourth proportional to 185,792.76, 256,385.42 and 105,220.87 is: 145,199.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,792.76 : 256,385.42 = 105,220.87 : x
  2. Step 2: Convert to fraction form
    185,792.76/256,385.42 = 105,220.87/x
  3. Step 3: Cross multiply
    185,792.76x = 256,385.42 × 105,220.87
  4. Step 4: Simplify right side
    185,792.76x = 26,977,096,947.72
  5. Step 5: Solve for x
    x = 26,977,096,947.72/185,792.76
  6. Step 6: Final answer
    x = 145,199.94

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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.