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Finding the Fourth Proportional to 186,450.60, 257,303.50 and 105,879.80

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Solution

The fourth proportional to 186,450.60, 257,303.50 and 105,879.80 is: 146,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,450.60 : 257,303.50 = 105,879.80 : x
  2. Step 2: Convert to fraction form
    186,450.60/257,303.50 = 105,879.80/x
  3. Step 3: Cross multiply
    186,450.60x = 257,303.50 × 105,879.80
  4. Step 4: Simplify right side
    186,450.60x = 27,243,243,119.30
  5. Step 5: Solve for x
    x = 27,243,243,119.30/186,450.60
  6. Step 6: Final answer
    x = 146,115.07

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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.