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Finding the Fourth Proportional to 93,762.31, 129,393.21 and 51,319.93

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Solution

The fourth proportional to 93,762.31, 129,393.21 and 51,319.93 is: 70,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,762.31 : 129,393.21 = 51,319.93 : x
  2. Step 2: Convert to fraction form
    93,762.31/129,393.21 = 51,319.93/x
  3. Step 3: Cross multiply
    93,762.31x = 129,393.21 × 51,319.93
  4. Step 4: Simplify right side
    93,762.31x = 6,640,450,674.86
  5. Step 5: Solve for x
    x = 6,640,450,674.86/93,762.31
  6. Step 6: Final answer
    x = 70,822.17

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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.