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Finding the Fourth Proportional to 585,664.50, 808,217.55 and 317,392.50

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Solution

The fourth proportional to 585,664.50, 808,217.55 and 317,392.50 is: 438,001.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,664.50 : 808,217.55 = 317,392.50 : x
  2. Step 2: Convert to fraction form
    585,664.50/808,217.55 = 317,392.50/x
  3. Step 3: Cross multiply
    585,664.50x = 808,217.55 × 317,392.50
  4. Step 4: Simplify right side
    585,664.50x = 256,522,188,738.38
  5. Step 5: Solve for x
    x = 256,522,188,738.38/585,664.50
  6. Step 6: Final answer
    x = 438,001.94

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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.