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Finding the Fourth Proportional to 403,333.20, 605,437.20 and 253,742.40

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Solution

The fourth proportional to 403,333.20, 605,437.20 and 253,742.40 is: 380,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,333.20 : 605,437.20 = 253,742.40 : x
  2. Step 2: Convert to fraction form
    403,333.20/605,437.20 = 253,742.40/x
  3. Step 3: Cross multiply
    403,333.20x = 605,437.20 × 253,742.40
  4. Step 4: Simplify right side
    403,333.20x = 153,625,088,177.28
  5. Step 5: Solve for x
    x = 153,625,088,177.28/403,333.20
  6. Step 6: Final answer
    x = 380,888.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.