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Finding the Fourth Proportional to 431,039.44, 595,106.76 and 317,664.72

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Solution

The fourth proportional to 431,039.44, 595,106.76 and 317,664.72 is: 438,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,039.44 : 595,106.76 = 317,664.72 : x
  2. Step 2: Convert to fraction form
    431,039.44/595,106.76 = 317,664.72/x
  3. Step 3: Cross multiply
    431,039.44x = 595,106.76 × 317,664.72
  4. Step 4: Simplify right side
    431,039.44x = 189,044,422,285.51
  5. Step 5: Solve for x
    x = 189,044,422,285.51/431,039.44
  6. Step 6: Final answer
    x = 438,578.02

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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.