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Finding the Fourth Proportional to 585,515.25, 808,011.60 and 317,243.25

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Solution

The fourth proportional to 585,515.25, 808,011.60 and 317,243.25 is: 437,795.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,515.25 : 808,011.60 = 317,243.25 : x
  2. Step 2: Convert to fraction form
    585,515.25/808,011.60 = 317,243.25/x
  3. Step 3: Cross multiply
    585,515.25x = 808,011.60 × 317,243.25
  4. Step 4: Simplify right side
    585,515.25x = 256,336,226,021.70
  5. Step 5: Solve for x
    x = 256,336,226,021.70/585,515.25
  6. Step 6: Final answer
    x = 437,795.99

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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.