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Finding the Fourth Proportional to 627,388.76, 865,801.95 and 340,908.84

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Solution

The fourth proportional to 627,388.76, 865,801.95 and 340,908.84 is: 470,457.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,388.76 : 865,801.95 = 340,908.84 : x
  2. Step 2: Convert to fraction form
    627,388.76/865,801.95 = 340,908.84/x
  3. Step 3: Cross multiply
    627,388.76x = 865,801.95 × 340,908.84
  4. Step 4: Simplify right side
    627,388.76x = 295,159,538,444.24
  5. Step 5: Solve for x
    x = 295,159,538,444.24/627,388.76
  6. Step 6: Final answer
    x = 470,457.17

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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.