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Finding the Fourth Proportional to 66,328.30, 91,528.43 and 37,648.54

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Solution

The fourth proportional to 66,328.30, 91,528.43 and 37,648.54 is: 51,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.30 : 91,528.43 = 37,648.54 : x
  2. Step 2: Convert to fraction form
    66,328.30/91,528.43 = 37,648.54/x
  3. Step 3: Cross multiply
    66,328.30x = 91,528.43 × 37,648.54
  4. Step 4: Simplify right side
    66,328.30x = 3,445,911,569.75
  5. Step 5: Solve for x
    x = 3,445,911,569.75/66,328.30
  6. Step 6: Final answer
    x = 51,952.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.