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Finding the Fourth Proportional to 186,010.40, 279,015.60 and 111,360.80

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Solution

The fourth proportional to 186,010.40, 279,015.60 and 111,360.80 is: 167,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,010.40 : 279,015.60 = 111,360.80 : x
  2. Step 2: Convert to fraction form
    186,010.40/279,015.60 = 111,360.80/x
  3. Step 3: Cross multiply
    186,010.40x = 279,015.60 × 111,360.80
  4. Step 4: Simplify right side
    186,010.40x = 31,071,400,428.48
  5. Step 5: Solve for x
    x = 31,071,400,428.48/186,010.40
  6. Step 6: Final answer
    x = 167,041.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.