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Finding the Fourth Proportional to 283,019.34, 390,499.08 and 191,309.64

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Solution

The fourth proportional to 283,019.34, 390,499.08 and 191,309.64 is: 263,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,019.34 : 390,499.08 = 191,309.64 : x
  2. Step 2: Convert to fraction form
    283,019.34/390,499.08 = 191,309.64/x
  3. Step 3: Cross multiply
    283,019.34x = 390,499.08 × 191,309.64
  4. Step 4: Simplify right side
    283,019.34x = 74,706,238,415.13
  5. Step 5: Solve for x
    x = 74,706,238,415.13/283,019.34
  6. Step 6: Final answer
    x = 263,961.60

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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.