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Finding the Fourth Proportional to 613,412.58, 920,155.44 and 192,688.32

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Solution

The fourth proportional to 613,412.58, 920,155.44 and 192,688.32 is: 289,043.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,412.58 : 920,155.44 = 192,688.32 : x
  2. Step 2: Convert to fraction form
    613,412.58/920,155.44 = 192,688.32/x
  3. Step 3: Cross multiply
    613,412.58x = 920,155.44 × 192,688.32
  4. Step 4: Simplify right side
    613,412.58x = 177,303,205,872.46
  5. Step 5: Solve for x
    x = 177,303,205,872.46/613,412.58
  6. Step 6: Final answer
    x = 289,043.97

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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.