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Finding the Fourth Proportional to 65,483.46, 90,343.46 and 42,835.36

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Solution

The fourth proportional to 65,483.46, 90,343.46 and 42,835.36 is: 59,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,483.46 : 90,343.46 = 42,835.36 : x
  2. Step 2: Convert to fraction form
    65,483.46/90,343.46 = 42,835.36/x
  3. Step 3: Cross multiply
    65,483.46x = 90,343.46 × 42,835.36
  4. Step 4: Simplify right side
    65,483.46x = 3,869,894,632.75
  5. Step 5: Solve for x
    x = 3,869,894,632.75/65,483.46
  6. Step 6: Final answer
    x = 59,097.28

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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.