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Finding the Fourth Proportional to 613,886.68, 920,742.54 and 193,151.62

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Solution

The fourth proportional to 613,886.68, 920,742.54 and 193,151.62 is: 289,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,886.68 : 920,742.54 = 193,151.62 : x
  2. Step 2: Convert to fraction form
    613,886.68/920,742.54 = 193,151.62/x
  3. Step 3: Cross multiply
    613,886.68x = 920,742.54 × 193,151.62
  4. Step 4: Simplify right side
    613,886.68x = 177,842,913,203.92
  5. Step 5: Solve for x
    x = 177,842,913,203.92/613,886.68
  6. Step 6: Final answer
    x = 289,699.91

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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.