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Finding the Fourth Proportional to 615,286.03, 849,094.76 and 339,643.96

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Solution

The fourth proportional to 615,286.03, 849,094.76 and 339,643.96 is: 468,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,286.03 : 849,094.76 = 339,643.96 : x
  2. Step 2: Convert to fraction form
    615,286.03/849,094.76 = 339,643.96/x
  3. Step 3: Cross multiply
    615,286.03x = 849,094.76 × 339,643.96
  4. Step 4: Simplify right side
    615,286.03x = 288,389,905,003.43
  5. Step 5: Solve for x
    x = 288,389,905,003.43/615,286.03
  6. Step 6: Final answer
    x = 468,708.68

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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.