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Finding the Fourth Proportional to 61,813.60, 92,631.60 and 38,426.40

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Solution

The fourth proportional to 61,813.60, 92,631.60 and 38,426.40 is: 57,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,813.60 : 92,631.60 = 38,426.40 : x
  2. Step 2: Convert to fraction form
    61,813.60/92,631.60 = 38,426.40/x
  3. Step 3: Cross multiply
    61,813.60x = 92,631.60 × 38,426.40
  4. Step 4: Simplify right side
    61,813.60x = 3,559,498,914.24
  5. Step 5: Solve for x
    x = 3,559,498,914.24/61,813.60
  6. Step 6: Final answer
    x = 57,584.40

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1.5x scale

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.