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Finding the Fourth Proportional to 201,628.40, 302,442.60 and 89,362.40

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Solution

The fourth proportional to 201,628.40, 302,442.60 and 89,362.40 is: 134,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,628.40 : 302,442.60 = 89,362.40 : x
  2. Step 2: Convert to fraction form
    201,628.40/302,442.60 = 89,362.40/x
  3. Step 3: Cross multiply
    201,628.40x = 302,442.60 × 89,362.40
  4. Step 4: Simplify right side
    201,628.40x = 27,026,996,598.24
  5. Step 5: Solve for x
    x = 27,026,996,598.24/201,628.40
  6. Step 6: Final answer
    x = 134,043.60

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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.