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Finding the Fourth Proportional to 76,693.40, 105,834.30 and 43,152.92

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Solution

The fourth proportional to 76,693.40, 105,834.30 and 43,152.92 is: 59,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,693.40 : 105,834.30 = 43,152.92 : x
  2. Step 2: Convert to fraction form
    76,693.40/105,834.30 = 43,152.92/x
  3. Step 3: Cross multiply
    76,693.40x = 105,834.30 × 43,152.92
  4. Step 4: Simplify right side
    76,693.40x = 4,567,059,081.16
  5. Step 5: Solve for x
    x = 4,567,059,081.16/76,693.40
  6. Step 6: Final answer
    x = 59,549.57

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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.