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Finding the Fourth Proportional to 7,232,598.31, 9,981,347.72 and 3,969,384.50

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Solution

The fourth proportional to 7,232,598.31, 9,981,347.72 and 3,969,384.50 is: 5,477,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,232,598.31 : 9,981,347.72 = 3,969,384.50 : x
  2. Step 2: Convert to fraction form
    7,232,598.31/9,981,347.72 = 3,969,384.50/x
  3. Step 3: Cross multiply
    7,232,598.31x = 9,981,347.72 × 3,969,384.50
  4. Step 4: Simplify right side
    7,232,598.31x = 39,619,806,877,837.71
  5. Step 5: Solve for x
    x = 39,619,806,877,837.71/7,232,598.31
  6. Step 6: Final answer
    x = 5,477,949.30

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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.