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Finding the Fourth Proportional to 77,346.48, 106,738.74 and 43,356.18

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Solution

The fourth proportional to 77,346.48, 106,738.74 and 43,356.18 is: 59,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,346.48 : 106,738.74 = 43,356.18 : x
  2. Step 2: Convert to fraction form
    77,346.48/106,738.74 = 43,356.18/x
  3. Step 3: Cross multiply
    77,346.48x = 106,738.74 × 43,356.18
  4. Step 4: Simplify right side
    77,346.48x = 4,627,784,024.41
  5. Step 5: Solve for x
    x = 4,627,784,024.41/77,346.48
  6. Step 6: Final answer
    x = 59,831.86

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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.