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Finding the Fourth Proportional to 190,510.13, 262,913.09 and 105,627.20

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Solution

The fourth proportional to 190,510.13, 262,913.09 and 105,627.20 is: 145,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,510.13 : 262,913.09 = 105,627.20 : x
  2. Step 2: Convert to fraction form
    190,510.13/262,913.09 = 105,627.20/x
  3. Step 3: Cross multiply
    190,510.13x = 262,913.09 × 105,627.20
  4. Step 4: Simplify right side
    190,510.13x = 27,770,771,697.35
  5. Step 5: Solve for x
    x = 27,770,771,697.35/190,510.13
  6. Step 6: Final answer
    x = 145,770.58

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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.