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Finding the Fourth Proportional to 53,955.87, 74,484.17 and 38,443.49

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Solution

The fourth proportional to 53,955.87, 74,484.17 and 38,443.49 is: 53,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,955.87 : 74,484.17 = 38,443.49 : x
  2. Step 2: Convert to fraction form
    53,955.87/74,484.17 = 38,443.49/x
  3. Step 3: Cross multiply
    53,955.87x = 74,484.17 × 38,443.49
  4. Step 4: Simplify right side
    53,955.87x = 2,863,431,938.61
  5. Step 5: Solve for x
    x = 2,863,431,938.61/53,955.87
  6. Step 6: Final answer
    x = 53,069.89

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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.