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Finding the Fourth Proportional to 130,586.40, 195,879.60 and 64,069.20

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Solution

The fourth proportional to 130,586.40, 195,879.60 and 64,069.20 is: 96,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,586.40 : 195,879.60 = 64,069.20 : x
  2. Step 2: Convert to fraction form
    130,586.40/195,879.60 = 64,069.20/x
  3. Step 3: Cross multiply
    130,586.40x = 195,879.60 × 64,069.20
  4. Step 4: Simplify right side
    130,586.40x = 12,549,849,268.32
  5. Step 5: Solve for x
    x = 12,549,849,268.32/130,586.40
  6. Step 6: Final answer
    x = 96,103.80

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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.