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Finding the Fourth Proportional to 403,765.68, 557,189.28 and 234,015.60

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Solution

The fourth proportional to 403,765.68, 557,189.28 and 234,015.60 is: 322,937.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,765.68 : 557,189.28 = 234,015.60 : x
  2. Step 2: Convert to fraction form
    403,765.68/557,189.28 = 234,015.60/x
  3. Step 3: Cross multiply
    403,765.68x = 557,189.28 × 234,015.60
  4. Step 4: Simplify right side
    403,765.68x = 130,390,983,672.77
  5. Step 5: Solve for x
    x = 130,390,983,672.77/403,765.68
  6. Step 6: Final answer
    x = 322,937.26

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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.