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Finding the Fourth Proportional to 193,615.40, 290,423.10 and 162,511.40

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Solution

The fourth proportional to 193,615.40, 290,423.10 and 162,511.40 is: 243,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,615.40 : 290,423.10 = 162,511.40 : x
  2. Step 2: Convert to fraction form
    193,615.40/290,423.10 = 162,511.40/x
  3. Step 3: Cross multiply
    193,615.40x = 290,423.10 × 162,511.40
  4. Step 4: Simplify right side
    193,615.40x = 47,197,064,573.34
  5. Step 5: Solve for x
    x = 47,197,064,573.34/193,615.40
  6. Step 6: Final answer
    x = 243,767.10

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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.