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Finding the Fourth Proportional to 58,692.40, 88,038.60 and 17,139.40

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Solution

The fourth proportional to 58,692.40, 88,038.60 and 17,139.40 is: 25,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,692.40 : 88,038.60 = 17,139.40 : x
  2. Step 2: Convert to fraction form
    58,692.40/88,038.60 = 17,139.40/x
  3. Step 3: Cross multiply
    58,692.40x = 88,038.60 × 17,139.40
  4. Step 4: Simplify right side
    58,692.40x = 1,508,928,780.84
  5. Step 5: Solve for x
    x = 1,508,928,780.84/58,692.40
  6. Step 6: Final answer
    x = 25,709.10

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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.