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Finding the Fourth Proportional to 69,411.28, 104,011.80 and 45,953.68

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Solution

The fourth proportional to 69,411.28, 104,011.80 and 45,953.68 is: 68,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,411.28 : 104,011.80 = 45,953.68 : x
  2. Step 2: Convert to fraction form
    69,411.28/104,011.80 = 45,953.68/x
  3. Step 3: Cross multiply
    69,411.28x = 104,011.80 × 45,953.68
  4. Step 4: Simplify right side
    69,411.28x = 4,779,724,973.42
  5. Step 5: Solve for x
    x = 4,779,724,973.42/69,411.28
  6. Step 6: Final answer
    x = 68,860.93

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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.