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Finding the Fourth Proportional to 112,984.80, 169,477.20 and 73,586.40

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Solution

The fourth proportional to 112,984.80, 169,477.20 and 73,586.40 is: 110,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,984.80 : 169,477.20 = 73,586.40 : x
  2. Step 2: Convert to fraction form
    112,984.80/169,477.20 = 73,586.40/x
  3. Step 3: Cross multiply
    112,984.80x = 169,477.20 × 73,586.40
  4. Step 4: Simplify right side
    112,984.80x = 12,471,217,030.08
  5. Step 5: Solve for x
    x = 12,471,217,030.08/112,984.80
  6. Step 6: Final answer
    x = 110,379.60

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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.