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Finding the Fourth Proportional to 70,522.48, 97,319.84 and 40,307.28

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Solution

The fourth proportional to 70,522.48, 97,319.84 and 40,307.28 is: 55,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,522.48 : 97,319.84 = 40,307.28 : x
  2. Step 2: Convert to fraction form
    70,522.48/97,319.84 = 40,307.28/x
  3. Step 3: Cross multiply
    70,522.48x = 97,319.84 × 40,307.28
  4. Step 4: Simplify right side
    70,522.48x = 3,922,698,040.44
  5. Step 5: Solve for x
    x = 3,922,698,040.44/70,522.48
  6. Step 6: Final answer
    x = 55,623.37

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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.