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Finding the Fourth Proportional to 140,924.40, 211,386.60 and 70,940.40

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Solution

The fourth proportional to 140,924.40, 211,386.60 and 70,940.40 is: 106,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,924.40 : 211,386.60 = 70,940.40 : x
  2. Step 2: Convert to fraction form
    140,924.40/211,386.60 = 70,940.40/x
  3. Step 3: Cross multiply
    140,924.40x = 211,386.60 × 70,940.40
  4. Step 4: Simplify right side
    140,924.40x = 14,995,849,958.64
  5. Step 5: Solve for x
    x = 14,995,849,958.64/140,924.40
  6. Step 6: Final answer
    x = 106,410.60

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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.