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Finding the Fourth Proportional to 124,312.70, 186,469.05 and 54,328.70

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Solution

The fourth proportional to 124,312.70, 186,469.05 and 54,328.70 is: 81,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,312.70 : 186,469.05 = 54,328.70 : x
  2. Step 2: Convert to fraction form
    124,312.70/186,469.05 = 54,328.70/x
  3. Step 3: Cross multiply
    124,312.70x = 186,469.05 × 54,328.70
  4. Step 4: Simplify right side
    124,312.70x = 10,130,621,076.74
  5. Step 5: Solve for x
    x = 10,130,621,076.74/124,312.70
  6. Step 6: Final answer
    x = 81,493.05

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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.