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Finding the Fourth Proportional to 613,386.69, 920,116.79 and 192,662.57

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Solution

The fourth proportional to 613,386.69, 920,116.79 and 192,662.57 is: 289,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,386.69 : 920,116.79 = 192,662.57 : x
  2. Step 2: Convert to fraction form
    613,386.69/920,116.79 = 192,662.57/x
  3. Step 3: Cross multiply
    613,386.69x = 920,116.79 × 192,662.57
  4. Step 4: Simplify right side
    613,386.69x = 177,272,065,461.55
  5. Step 5: Solve for x
    x = 177,272,065,461.55/613,386.69
  6. Step 6: Final answer
    x = 289,005.40

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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.