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Finding the Fourth Proportional to 425,598.36, 587,367.18 and 317,981.58

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Solution

The fourth proportional to 425,598.36, 587,367.18 and 317,981.58 is: 438,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,598.36 : 587,367.18 = 317,981.58 : x
  2. Step 2: Convert to fraction form
    425,598.36/587,367.18 = 317,981.58/x
  3. Step 3: Cross multiply
    425,598.36x = 587,367.18 × 317,981.58
  4. Step 4: Simplify right side
    425,598.36x = 186,771,943,936.54
  5. Step 5: Solve for x
    x = 186,771,943,936.54/425,598.36
  6. Step 6: Final answer
    x = 438,845.54

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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.