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Finding the Fourth Proportional to 158,945.40, 238,223.70 and 70,104.60

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Solution

The fourth proportional to 158,945.40, 238,223.70 and 70,104.60 is: 105,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,945.40 : 238,223.70 = 70,104.60 : x
  2. Step 2: Convert to fraction form
    158,945.40/238,223.70 = 70,104.60/x
  3. Step 3: Cross multiply
    158,945.40x = 238,223.70 × 70,104.60
  4. Step 4: Simplify right side
    158,945.40x = 16,700,577,199.02
  5. Step 5: Solve for x
    x = 16,700,577,199.02/158,945.40
  6. Step 6: Final answer
    x = 105,071.16

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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.