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Finding the Fourth Proportional to 519,485.93, 716,883.61 and 290,046.74

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Solution

The fourth proportional to 519,485.93, 716,883.61 and 290,046.74 is: 400,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,485.93 : 716,883.61 = 290,046.74 : x
  2. Step 2: Convert to fraction form
    519,485.93/716,883.61 = 290,046.74/x
  3. Step 3: Cross multiply
    519,485.93x = 716,883.61 × 290,046.74
  4. Step 4: Simplify right side
    519,485.93x = 207,929,754,039.93
  5. Step 5: Solve for x
    x = 207,929,754,039.93/519,485.93
  6. Step 6: Final answer
    x = 400,260.61

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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.