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Finding the Fourth Proportional to 352,061.79, 485,845.40 and 190,916.80

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Solution

The fourth proportional to 352,061.79, 485,845.40 and 190,916.80 is: 263,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,061.79 : 485,845.40 = 190,916.80 : x
  2. Step 2: Convert to fraction form
    352,061.79/485,845.40 = 190,916.80/x
  3. Step 3: Cross multiply
    352,061.79x = 485,845.40 × 190,916.80
  4. Step 4: Simplify right side
    352,061.79x = 92,756,045,678.91
  5. Step 5: Solve for x
    x = 92,756,045,678.91/352,061.79
  6. Step 6: Final answer
    x = 263,465.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.