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Finding the Fourth Proportional to 620,724.70, 931,000.65 and 200,043.10

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Solution

The fourth proportional to 620,724.70, 931,000.65 and 200,043.10 is: 300,036.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,724.70 : 931,000.65 = 200,043.10 : x
  2. Step 2: Convert to fraction form
    620,724.70/931,000.65 = 200,043.10/x
  3. Step 3: Cross multiply
    620,724.70x = 931,000.65 × 200,043.10
  4. Step 4: Simplify right side
    620,724.70x = 186,240,256,128.02
  5. Step 5: Solve for x
    x = 186,240,256,128.02/620,724.70
  6. Step 6: Final answer
    x = 300,036.81

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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.