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Finding the Fourth Proportional to 70,598.66, 105,275.16 and 60,800.90

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Solution

The fourth proportional to 70,598.66, 105,275.16 and 60,800.90 is: 90,664.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,598.66 : 105,275.16 = 60,800.90 : x
  2. Step 2: Convert to fraction form
    70,598.66/105,275.16 = 60,800.90/x
  3. Step 3: Cross multiply
    70,598.66x = 105,275.16 × 60,800.90
  4. Step 4: Simplify right side
    70,598.66x = 6,400,823,949.27
  5. Step 5: Solve for x
    x = 6,400,823,949.27/70,598.66
  6. Step 6: Final answer
    x = 90,664.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.