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Finding the Fourth Proportional to 190,681.40, 286,313.70 and 111,949.40

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Solution

The fourth proportional to 190,681.40, 286,313.70 and 111,949.40 is: 168,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,681.40 : 286,313.70 = 111,949.40 : x
  2. Step 2: Convert to fraction form
    190,681.40/286,313.70 = 111,949.40/x
  3. Step 3: Cross multiply
    190,681.40x = 286,313.70 × 111,949.40
  4. Step 4: Simplify right side
    190,681.40x = 32,052,646,926.78
  5. Step 5: Solve for x
    x = 32,052,646,926.78/190,681.40
  6. Step 6: Final answer
    x = 168,095.30

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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.