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Finding the Fourth Proportional to 104,607.79, 144,359.53 and 56,861.01

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Solution

The fourth proportional to 104,607.79, 144,359.53 and 56,861.01 is: 78,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,607.79 : 144,359.53 = 56,861.01 : x
  2. Step 2: Convert to fraction form
    104,607.79/144,359.53 = 56,861.01/x
  3. Step 3: Cross multiply
    104,607.79x = 144,359.53 × 56,861.01
  4. Step 4: Simplify right side
    104,607.79x = 8,208,428,536.77
  5. Step 5: Solve for x
    x = 8,208,428,536.77/104,607.79
  6. Step 6: Final answer
    x = 78,468.62

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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.