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Finding the Fourth Proportional to 104,339.80, 143,987.58 and 56,591.80

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Solution

The fourth proportional to 104,339.80, 143,987.58 and 56,591.80 is: 78,095.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,339.80 : 143,987.58 = 56,591.80 : x
  2. Step 2: Convert to fraction form
    104,339.80/143,987.58 = 56,591.80/x
  3. Step 3: Cross multiply
    104,339.80x = 143,987.58 × 56,591.80
  4. Step 4: Simplify right side
    104,339.80x = 8,148,516,329.84
  5. Step 5: Solve for x
    x = 8,148,516,329.84/104,339.80
  6. Step 6: Final answer
    x = 78,095.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.