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Finding the Fourth Proportional to 53,798.40, 74,246.40 and 31,449.60

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Solution

The fourth proportional to 53,798.40, 74,246.40 and 31,449.60 is: 43,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,798.40 : 74,246.40 = 31,449.60 : x
  2. Step 2: Convert to fraction form
    53,798.40/74,246.40 = 31,449.60/x
  3. Step 3: Cross multiply
    53,798.40x = 74,246.40 × 31,449.60
  4. Step 4: Simplify right side
    53,798.40x = 2,335,019,581.44
  5. Step 5: Solve for x
    x = 2,335,019,581.44/53,798.40
  6. Step 6: Final answer
    x = 43,403.14

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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.