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Finding the Fourth Proportional to 190,461.54, 285,711.45 and 70,550.76

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Solution

The fourth proportional to 190,461.54, 285,711.45 and 70,550.76 is: 105,833.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,461.54 : 285,711.45 = 70,550.76 : x
  2. Step 2: Convert to fraction form
    190,461.54/285,711.45 = 70,550.76/x
  3. Step 3: Cross multiply
    190,461.54x = 285,711.45 × 70,550.76
  4. Step 4: Simplify right side
    190,461.54x = 20,157,159,938.20
  5. Step 5: Solve for x
    x = 20,157,159,938.20/190,461.54
  6. Step 6: Final answer
    x = 105,833.23

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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.