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Finding the Fourth Proportional to 317,212.80, 437,640.12 and 181,148.64

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Solution

The fourth proportional to 317,212.80, 437,640.12 and 181,148.64 is: 249,920.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,212.80 : 437,640.12 = 181,148.64 : x
  2. Step 2: Convert to fraction form
    317,212.80/437,640.12 = 181,148.64/x
  3. Step 3: Cross multiply
    317,212.80x = 437,640.12 × 181,148.64
  4. Step 4: Simplify right side
    317,212.80x = 79,277,912,547.44
  5. Step 5: Solve for x
    x = 79,277,912,547.44/317,212.80
  6. Step 6: Final answer
    x = 249,920.28

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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.