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Finding the Fourth Proportional to 194,639.40, 291,959.10 and 155,273.40

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Solution

The fourth proportional to 194,639.40, 291,959.10 and 155,273.40 is: 232,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,639.40 : 291,959.10 = 155,273.40 : x
  2. Step 2: Convert to fraction form
    194,639.40/291,959.10 = 155,273.40/x
  3. Step 3: Cross multiply
    194,639.40x = 291,959.10 × 155,273.40
  4. Step 4: Simplify right side
    194,639.40x = 45,333,482,117.94
  5. Step 5: Solve for x
    x = 45,333,482,117.94/194,639.40
  6. Step 6: Final answer
    x = 232,910.10

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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.