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Finding the Fourth Proportional to 59,438.80, 89,223.81 and 47,038.51

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Solution

The fourth proportional to 59,438.80, 89,223.81 and 47,038.51 is: 70,609.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,438.80 : 89,223.81 = 47,038.51 : x
  2. Step 2: Convert to fraction form
    59,438.80/89,223.81 = 47,038.51/x
  3. Step 3: Cross multiply
    59,438.80x = 89,223.81 × 47,038.51
  4. Step 4: Simplify right side
    59,438.80x = 4,196,955,078.92
  5. Step 5: Solve for x
    x = 4,196,955,078.92/59,438.80
  6. Step 6: Final answer
    x = 70,609.69

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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.