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Finding the Fourth Proportional to 358,490.40, 537,735.60 and 148,538.40

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Solution

The fourth proportional to 358,490.40, 537,735.60 and 148,538.40 is: 222,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,490.40 : 537,735.60 = 148,538.40 : x
  2. Step 2: Convert to fraction form
    358,490.40/537,735.60 = 148,538.40/x
  3. Step 3: Cross multiply
    358,490.40x = 537,735.60 × 148,538.40
  4. Step 4: Simplify right side
    358,490.40x = 79,874,385,647.04
  5. Step 5: Solve for x
    x = 79,874,385,647.04/358,490.40
  6. Step 6: Final answer
    x = 222,807.60

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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.