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Finding the Fourth Proportional to 190,373.78, 262,715.79 and 105,490.83

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Solution

The fourth proportional to 190,373.78, 262,715.79 and 105,490.83 is: 145,577.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,373.78 : 262,715.79 = 105,490.83 : x
  2. Step 2: Convert to fraction form
    190,373.78/262,715.79 = 105,490.83/x
  3. Step 3: Cross multiply
    190,373.78x = 262,715.79 × 105,490.83
  4. Step 4: Simplify right side
    190,373.78x = 27,714,106,741.21
  5. Step 5: Solve for x
    x = 27,714,106,741.21/190,373.78
  6. Step 6: Final answer
    x = 145,577.33

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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.