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Finding the Fourth Proportional to 60,653.45, 90,990.98 and 20,670.22

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Solution

The fourth proportional to 60,653.45, 90,990.98 and 20,670.22 is: 31,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,653.45 : 90,990.98 = 20,670.22 : x
  2. Step 2: Convert to fraction form
    60,653.45/90,990.98 = 20,670.22/x
  3. Step 3: Cross multiply
    60,653.45x = 90,990.98 × 20,670.22
  4. Step 4: Simplify right side
    60,653.45x = 1,880,803,295.46
  5. Step 5: Solve for x
    x = 1,880,803,295.46/60,653.45
  6. Step 6: Final answer
    x = 31,009.01

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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.