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Finding the Fourth Proportional to 97,136.62, 145,461.62 and 61,490.34

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Solution

The fourth proportional to 97,136.62, 145,461.62 and 61,490.34 is: 92,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,136.62 : 145,461.62 = 61,490.34 : x
  2. Step 2: Convert to fraction form
    97,136.62/145,461.62 = 61,490.34/x
  3. Step 3: Cross multiply
    97,136.62x = 145,461.62 × 61,490.34
  4. Step 4: Simplify right side
    97,136.62x = 8,944,484,624.48
  5. Step 5: Solve for x
    x = 8,944,484,624.48/97,136.62
  6. Step 6: Final answer
    x = 92,081.49

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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.