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Finding the Fourth Proportional to 554,071.32, 831,107.16 and 133,347.20

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Solution

The fourth proportional to 554,071.32, 831,107.16 and 133,347.20 is: 200,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,071.32 : 831,107.16 = 133,347.20 : x
  2. Step 2: Convert to fraction form
    554,071.32/831,107.16 = 133,347.20/x
  3. Step 3: Cross multiply
    554,071.32x = 831,107.16 × 133,347.20
  4. Step 4: Simplify right side
    554,071.32x = 110,825,808,530.42
  5. Step 5: Solve for x
    x = 110,825,808,530.42/554,071.32
  6. Step 6: Final answer
    x = 200,020.84

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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.