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Finding the Fourth Proportional to 85,335.88, 127,931.52 and 35,384.80

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Solution

The fourth proportional to 85,335.88, 127,931.52 and 35,384.80 is: 53,047.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,335.88 : 127,931.52 = 35,384.80 : x
  2. Step 2: Convert to fraction form
    85,335.88/127,931.52 = 35,384.80/x
  3. Step 3: Cross multiply
    85,335.88x = 127,931.52 × 35,384.80
  4. Step 4: Simplify right side
    85,335.88x = 4,526,831,248.90
  5. Step 5: Solve for x
    x = 4,526,831,248.90/85,335.88
  6. Step 6: Final answer
    x = 53,047.22

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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.