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Finding the Fourth Proportional to 93,848, 129,508.64 and 51,406.40

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Solution

The fourth proportional to 93,848, 129,508.64 and 51,406.40 is: 70,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,848 : 129,508.64 = 51,406.40 : x
  2. Step 2: Convert to fraction form
    93,848/129,508.64 = 51,406.40/x
  3. Step 3: Cross multiply
    93,848x = 129,508.64 × 51,406.40
  4. Step 4: Simplify right side
    93,848x = 6,657,572,951.30
  5. Step 5: Solve for x
    x = 6,657,572,951.30/93,848
  6. Step 6: Final answer
    x = 70,939.96

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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.