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Finding the Fourth Proportional to 716,445.44, 988,693.23 and 394,154.76

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Solution

The fourth proportional to 716,445.44, 988,693.23 and 394,154.76 is: 543,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,445.44 : 988,693.23 = 394,154.76 : x
  2. Step 2: Convert to fraction form
    716,445.44/988,693.23 = 394,154.76/x
  3. Step 3: Cross multiply
    716,445.44x = 988,693.23 × 394,154.76
  4. Step 4: Simplify right side
    716,445.44x = 389,698,142,784.28
  5. Step 5: Solve for x
    x = 389,698,142,784.28/716,445.44
  6. Step 6: Final answer
    x = 543,932.76

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Double scale
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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.