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Finding the Fourth Proportional to 67,752, 93,457.56 and 40,878.60

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Solution

The fourth proportional to 67,752, 93,457.56 and 40,878.60 is: 56,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,752 : 93,457.56 = 40,878.60 : x
  2. Step 2: Convert to fraction form
    67,752/93,457.56 = 40,878.60/x
  3. Step 3: Cross multiply
    67,752x = 93,457.56 × 40,878.60
  4. Step 4: Simplify right side
    67,752x = 3,820,414,212.22
  5. Step 5: Solve for x
    x = 3,820,414,212.22/67,752
  6. Step 6: Final answer
    x = 56,388.21

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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.