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Finding the Fourth Proportional to 194,225.70, 291,338.55 and 115,428.90

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Solution

The fourth proportional to 194,225.70, 291,338.55 and 115,428.90 is: 173,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,225.70 : 291,338.55 = 115,428.90 : x
  2. Step 2: Convert to fraction form
    194,225.70/291,338.55 = 115,428.90/x
  3. Step 3: Cross multiply
    194,225.70x = 291,338.55 × 115,428.90
  4. Step 4: Simplify right side
    194,225.70x = 33,628,888,354.10
  5. Step 5: Solve for x
    x = 33,628,888,354.10/194,225.70
  6. Step 6: Final answer
    x = 173,143.35

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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.