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Finding the Fourth Proportional to 638,597.25, 881,223.84 and 352,119.69

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Solution

The fourth proportional to 638,597.25, 881,223.84 and 352,119.69 is: 485,902.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,597.25 : 881,223.84 = 352,119.69 : x
  2. Step 2: Convert to fraction form
    638,597.25/881,223.84 = 352,119.69/x
  3. Step 3: Cross multiply
    638,597.25x = 881,223.84 × 352,119.69
  4. Step 4: Simplify right side
    638,597.25x = 310,296,265,361.41
  5. Step 5: Solve for x
    x = 310,296,265,361.41/638,597.25
  6. Step 6: Final answer
    x = 485,902.92

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Half scale
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Double scale
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Similar ratio
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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.