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Finding the Fourth Proportional to 64,898.40, 97,328.40 and 25,432.80

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Solution

The fourth proportional to 64,898.40, 97,328.40 and 25,432.80 is: 38,141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,898.40 : 97,328.40 = 25,432.80 : x
  2. Step 2: Convert to fraction form
    64,898.40/97,328.40 = 25,432.80/x
  3. Step 3: Cross multiply
    64,898.40x = 97,328.40 × 25,432.80
  4. Step 4: Simplify right side
    64,898.40x = 2,475,333,731.52
  5. Step 5: Solve for x
    x = 2,475,333,731.52/64,898.40
  6. Step 6: Final answer
    x = 38,141.68

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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.