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Finding the Fourth Proportional to 586,039, 808,734.20 and 317,767

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Solution

The fourth proportional to 586,039, 808,734.20 and 317,767 is: 438,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,039 : 808,734.20 = 317,767 : x
  2. Step 2: Convert to fraction form
    586,039/808,734.20 = 317,767/x
  3. Step 3: Cross multiply
    586,039x = 808,734.20 × 317,767
  4. Step 4: Simplify right side
    586,039x = 256,989,040,531.40
  5. Step 5: Solve for x
    x = 256,989,040,531.40/586,039
  6. Step 6: Final answer
    x = 438,518.67

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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.