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Finding the Fourth Proportional to 76,191.47, 105,144.99 and 45,970.94

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Solution

The fourth proportional to 76,191.47, 105,144.99 and 45,970.94 is: 63,440.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,191.47 : 105,144.99 = 45,970.94 : x
  2. Step 2: Convert to fraction form
    76,191.47/105,144.99 = 45,970.94/x
  3. Step 3: Cross multiply
    76,191.47x = 105,144.99 × 45,970.94
  4. Step 4: Simplify right side
    76,191.47x = 4,833,614,117.06
  5. Step 5: Solve for x
    x = 4,833,614,117.06/76,191.47
  6. Step 6: Final answer
    x = 63,440.36

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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.