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Finding the Fourth Proportional to 93,878.70, 140,815.59 and 31,549.18

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Solution

The fourth proportional to 93,878.70, 140,815.59 and 31,549.18 is: 47,322.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,878.70 : 140,815.59 = 31,549.18 : x
  2. Step 2: Convert to fraction form
    93,878.70/140,815.59 = 31,549.18/x
  3. Step 3: Cross multiply
    93,878.70x = 140,815.59 × 31,549.18
  4. Step 4: Simplify right side
    93,878.70x = 4,442,616,395.72
  5. Step 5: Solve for x
    x = 4,442,616,395.72/93,878.70
  6. Step 6: Final answer
    x = 47,322.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.