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Finding the Fourth Proportional to 58,857.40, 88,329.30 and 39,129.40

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Solution

The fourth proportional to 58,857.40, 88,329.30 and 39,129.40 is: 58,722.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,857.40 : 88,329.30 = 39,129.40 : x
  2. Step 2: Convert to fraction form
    58,857.40/88,329.30 = 39,129.40/x
  3. Step 3: Cross multiply
    58,857.40x = 88,329.30 × 39,129.40
  4. Step 4: Simplify right side
    58,857.40x = 3,456,272,511.42
  5. Step 5: Solve for x
    x = 3,456,272,511.42/58,857.40
  6. Step 6: Final answer
    x = 58,722.82

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1.5x scale

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.