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Finding the Fourth Proportional to 123,043.80, 184,565.70 and 70,458.60

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Solution

The fourth proportional to 123,043.80, 184,565.70 and 70,458.60 is: 105,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,043.80 : 184,565.70 = 70,458.60 : x
  2. Step 2: Convert to fraction form
    123,043.80/184,565.70 = 70,458.60/x
  3. Step 3: Cross multiply
    123,043.80x = 184,565.70 × 70,458.60
  4. Step 4: Simplify right side
    123,043.80x = 13,004,240,830.02
  5. Step 5: Solve for x
    x = 13,004,240,830.02/123,043.80
  6. Step 6: Final answer
    x = 105,687.90

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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.