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Finding the Fourth Proportional to 70,411.78, 97,152.45 and 40,187.44

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Solution

The fourth proportional to 70,411.78, 97,152.45 and 40,187.44 is: 55,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,411.78 : 97,152.45 = 40,187.44 : x
  2. Step 2: Convert to fraction form
    70,411.78/97,152.45 = 40,187.44/x
  3. Step 3: Cross multiply
    70,411.78x = 97,152.45 × 40,187.44
  4. Step 4: Simplify right side
    70,411.78x = 3,904,308,225.97
  5. Step 5: Solve for x
    x = 3,904,308,225.97/70,411.78
  6. Step 6: Final answer
    x = 55,449.64

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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.