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Finding the Fourth Proportional to 621,071.56, 931,606.89 and 200,347.45

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Solution

The fourth proportional to 621,071.56, 931,606.89 and 200,347.45 is: 300,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,071.56 : 931,606.89 = 200,347.45 : x
  2. Step 2: Convert to fraction form
    621,071.56/931,606.89 = 200,347.45/x
  3. Step 3: Cross multiply
    621,071.56x = 931,606.89 × 200,347.45
  4. Step 4: Simplify right side
    621,071.56x = 186,645,064,813.93
  5. Step 5: Solve for x
    x = 186,645,064,813.93/621,071.56
  6. Step 6: Final answer
    x = 300,521.03

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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.