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Finding the Fourth Proportional to 611,505.81, 843,742.17 and 369,783.33

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Solution

The fourth proportional to 611,505.81, 843,742.17 and 369,783.33 is: 510,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,505.81 : 843,742.17 = 369,783.33 : x
  2. Step 2: Convert to fraction form
    611,505.81/843,742.17 = 369,783.33/x
  3. Step 3: Cross multiply
    611,505.81x = 843,742.17 × 369,783.33
  4. Step 4: Simplify right side
    611,505.81x = 312,001,789,284.03
  5. Step 5: Solve for x
    x = 312,001,789,284.03/611,505.81
  6. Step 6: Final answer
    x = 510,218.85

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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.