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Finding the Fourth Proportional to 611,141.81, 843,359.58 and 339,209.01

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Solution

The fourth proportional to 611,141.81, 843,359.58 and 339,209.01 is: 468,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,141.81 : 843,359.58 = 339,209.01 : x
  2. Step 2: Convert to fraction form
    611,141.81/843,359.58 = 339,209.01/x
  3. Step 3: Cross multiply
    611,141.81x = 843,359.58 × 339,209.01
  4. Step 4: Simplify right side
    611,141.81x = 286,075,168,205.82
  5. Step 5: Solve for x
    x = 286,075,168,205.82/611,141.81
  6. Step 6: Final answer
    x = 468,099.49

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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.