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Finding the Fourth Proportional to 190,507.68, 262,899.36 and 105,624.72

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Solution

The fourth proportional to 190,507.68, 262,899.36 and 105,624.72 is: 145,761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,507.68 : 262,899.36 = 105,624.72 : x
  2. Step 2: Convert to fraction form
    190,507.68/262,899.36 = 105,624.72/x
  3. Step 3: Cross multiply
    190,507.68x = 262,899.36 × 105,624.72
  4. Step 4: Simplify right side
    190,507.68x = 27,768,671,288.18
  5. Step 5: Solve for x
    x = 27,768,671,288.18/190,507.68
  6. Step 6: Final answer
    x = 145,761.43

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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.