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Finding the Fourth Proportional to 70,368.52, 97,096.98 and 40,153.90

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Solution

The fourth proportional to 70,368.52, 97,096.98 and 40,153.90 is: 55,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,368.52 : 97,096.98 = 40,153.90 : x
  2. Step 2: Convert to fraction form
    70,368.52/97,096.98 = 40,153.90/x
  3. Step 3: Cross multiply
    70,368.52x = 97,096.98 × 40,153.90
  4. Step 4: Simplify right side
    70,368.52x = 3,898,822,425.22
  5. Step 5: Solve for x
    x = 3,898,822,425.22/70,368.52
  6. Step 6: Final answer
    x = 55,405.78

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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.