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Finding the Fourth Proportional to 70,572.78, 97,314.62 and 53,384.04

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Solution

The fourth proportional to 70,572.78, 97,314.62 and 53,384.04 is: 73,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,572.78 : 97,314.62 = 53,384.04 : x
  2. Step 2: Convert to fraction form
    70,572.78/97,314.62 = 53,384.04/x
  3. Step 3: Cross multiply
    70,572.78x = 97,314.62 × 53,384.04
  4. Step 4: Simplify right side
    70,572.78x = 5,195,047,299.74
  5. Step 5: Solve for x
    x = 5,195,047,299.74/70,572.78
  6. Step 6: Final answer
    x = 73,612.62

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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.