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Finding the Fourth Proportional to 103,968.40, 156,006.60 and 48,564.40

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Solution

The fourth proportional to 103,968.40, 156,006.60 and 48,564.40 is: 72,871.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,968.40 : 156,006.60 = 48,564.40 : x
  2. Step 2: Convert to fraction form
    103,968.40/156,006.60 = 48,564.40/x
  3. Step 3: Cross multiply
    103,968.40x = 156,006.60 × 48,564.40
  4. Step 4: Simplify right side
    103,968.40x = 7,576,366,925.04
  5. Step 5: Solve for x
    x = 7,576,366,925.04/103,968.40
  6. Step 6: Final answer
    x = 72,871.82

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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.