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Finding the Fourth Proportional to 585,988.50, 808,664.13 and 317,716.50

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Solution

The fourth proportional to 585,988.50, 808,664.13 and 317,716.50 is: 438,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,988.50 : 808,664.13 = 317,716.50 : x
  2. Step 2: Convert to fraction form
    585,988.50/808,664.13 = 317,716.50/x
  3. Step 3: Cross multiply
    585,988.50x = 808,664.13 × 317,716.50
  4. Step 4: Simplify right side
    585,988.50x = 256,925,937,059.15
  5. Step 5: Solve for x
    x = 256,925,937,059.15/585,988.50
  6. Step 6: Final answer
    x = 438,448.77

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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.