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Finding the Fourth Proportional to 93,108, 128,466.63 and 54,869.10

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Solution

The fourth proportional to 93,108, 128,466.63 and 54,869.10 is: 75,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,108 : 128,466.63 = 54,869.10 : x
  2. Step 2: Convert to fraction form
    93,108/128,466.63 = 54,869.10/x
  3. Step 3: Cross multiply
    93,108x = 128,466.63 × 54,869.10
  4. Step 4: Simplify right side
    93,108x = 7,048,848,368.13
  5. Step 5: Solve for x
    x = 7,048,848,368.13/93,108
  6. Step 6: Final answer
    x = 75,706.15

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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.