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Finding the Fourth Proportional to 554,383.40, 831,567.78 and 133,655.90

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Solution

The fourth proportional to 554,383.40, 831,567.78 and 133,655.90 is: 200,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,383.40 : 831,567.78 = 133,655.90 : x
  2. Step 2: Convert to fraction form
    554,383.40/831,567.78 = 133,655.90/x
  3. Step 3: Cross multiply
    554,383.40x = 831,567.78 × 133,655.90
  4. Step 4: Simplify right side
    554,383.40x = 111,143,935,889.06
  5. Step 5: Solve for x
    x = 111,143,935,889.06/554,383.40
  6. Step 6: Final answer
    x = 200,482.08

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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.