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Finding the Fourth Proportional to 190,695.60, 286,043.40 and 48,540.60

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Solution

The fourth proportional to 190,695.60, 286,043.40 and 48,540.60 is: 72,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,695.60 : 286,043.40 = 48,540.60 : x
  2. Step 2: Convert to fraction form
    190,695.60/286,043.40 = 48,540.60/x
  3. Step 3: Cross multiply
    190,695.60x = 286,043.40 × 48,540.60
  4. Step 4: Simplify right side
    190,695.60x = 13,884,718,262.04
  5. Step 5: Solve for x
    x = 13,884,718,262.04/190,695.60
  6. Step 6: Final answer
    x = 72,810.90

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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.