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Finding the Fourth Proportional to 76,656.30, 105,784.02 and 44,392.20

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Solution

The fourth proportional to 76,656.30, 105,784.02 and 44,392.20 is: 61,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,656.30 : 105,784.02 = 44,392.20 : x
  2. Step 2: Convert to fraction form
    76,656.30/105,784.02 = 44,392.20/x
  3. Step 3: Cross multiply
    76,656.30x = 105,784.02 × 44,392.20
  4. Step 4: Simplify right side
    76,656.30x = 4,695,985,372.64
  5. Step 5: Solve for x
    x = 4,695,985,372.64/76,656.30
  6. Step 6: Final answer
    x = 61,260.27

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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.