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Finding the Fourth Proportional to 190,878.60, 286,317.90 and 155,449.20

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Solution

The fourth proportional to 190,878.60, 286,317.90 and 155,449.20 is: 233,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,878.60 : 286,317.90 = 155,449.20 : x
  2. Step 2: Convert to fraction form
    190,878.60/286,317.90 = 155,449.20/x
  3. Step 3: Cross multiply
    190,878.60x = 286,317.90 × 155,449.20
  4. Step 4: Simplify right side
    190,878.60x = 44,507,888,500.68
  5. Step 5: Solve for x
    x = 44,507,888,500.68/190,878.60
  6. Step 6: Final answer
    x = 233,173.80

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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.