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Finding the Fourth Proportional to 58,438.40, 87,830.40 and 50,835.20

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Solution

The fourth proportional to 58,438.40, 87,830.40 and 50,835.20 is: 76,403.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,438.40 : 87,830.40 = 50,835.20 : x
  2. Step 2: Convert to fraction form
    58,438.40/87,830.40 = 50,835.20/x
  3. Step 3: Cross multiply
    58,438.40x = 87,830.40 × 50,835.20
  4. Step 4: Simplify right side
    58,438.40x = 4,464,875,950.08
  5. Step 5: Solve for x
    x = 4,464,875,950.08/58,438.40
  6. Step 6: Final answer
    x = 76,403.12

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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.