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Finding the Fourth Proportional to 39,157.95, 58,746.47 and 12,503.96

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Solution

The fourth proportional to 39,157.95, 58,746.47 and 12,503.96 is: 18,758.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.95 : 58,746.47 = 12,503.96 : x
  2. Step 2: Convert to fraction form
    39,157.95/58,746.47 = 12,503.96/x
  3. Step 3: Cross multiply
    39,157.95x = 58,746.47 × 12,503.96
  4. Step 4: Simplify right side
    39,157.95x = 734,563,154.77
  5. Step 5: Solve for x
    x = 734,563,154.77/39,157.95
  6. Step 6: Final answer
    x = 18,758.98

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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.