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Finding the Fourth Proportional to 85,809.48, 118,411.11 and 47,568.66

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Solution

The fourth proportional to 85,809.48, 118,411.11 and 47,568.66 is: 65,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,809.48 : 118,411.11 = 47,568.66 : x
  2. Step 2: Convert to fraction form
    85,809.48/118,411.11 = 47,568.66/x
  3. Step 3: Cross multiply
    85,809.48x = 118,411.11 × 47,568.66
  4. Step 4: Simplify right side
    85,809.48x = 5,632,657,831.81
  5. Step 5: Solve for x
    x = 5,632,657,831.81/85,809.48
  6. Step 6: Final answer
    x = 65,641.44

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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.