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Finding the Fourth Proportional to 58,765.70, 88,139.55 and 19,322.90

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Solution

The fourth proportional to 58,765.70, 88,139.55 and 19,322.90 is: 28,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,765.70 : 88,139.55 = 19,322.90 : x
  2. Step 2: Convert to fraction form
    58,765.70/88,139.55 = 19,322.90/x
  3. Step 3: Cross multiply
    58,765.70x = 88,139.55 × 19,322.90
  4. Step 4: Simplify right side
    58,765.70x = 1,703,111,710.70
  5. Step 5: Solve for x
    x = 1,703,111,710.70/58,765.70
  6. Step 6: Final answer
    x = 28,981.39

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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.