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Finding the Fourth Proportional to 122,323.80, 183,485.70 and 52,339.80

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Solution

The fourth proportional to 122,323.80, 183,485.70 and 52,339.80 is: 78,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,323.80 : 183,485.70 = 52,339.80 : x
  2. Step 2: Convert to fraction form
    122,323.80/183,485.70 = 52,339.80/x
  3. Step 3: Cross multiply
    122,323.80x = 183,485.70 × 52,339.80
  4. Step 4: Simplify right side
    122,323.80x = 9,603,604,840.86
  5. Step 5: Solve for x
    x = 9,603,604,840.86/122,323.80
  6. Step 6: Final answer
    x = 78,509.70

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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.