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Finding the Fourth Proportional to 519,377.58, 716,738.09 and 289,921.59

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Solution

The fourth proportional to 519,377.58, 716,738.09 and 289,921.59 is: 400,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,377.58 : 716,738.09 = 289,921.59 : x
  2. Step 2: Convert to fraction form
    519,377.58/716,738.09 = 289,921.59/x
  3. Step 3: Cross multiply
    519,377.58x = 716,738.09 × 289,921.59
  4. Step 4: Simplify right side
    519,377.58x = 207,797,845,216.76
  5. Step 5: Solve for x
    x = 207,797,845,216.76/519,377.58
  6. Step 6: Final answer
    x = 400,090.13

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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.