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Finding the Fourth Proportional to 247,115.34, 341,015.48 and 139,681.60

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Solution

The fourth proportional to 247,115.34, 341,015.48 and 139,681.60 is: 192,758.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,115.34 : 341,015.48 = 139,681.60 : x
  2. Step 2: Convert to fraction form
    247,115.34/341,015.48 = 139,681.60/x
  3. Step 3: Cross multiply
    247,115.34x = 341,015.48 × 139,681.60
  4. Step 4: Simplify right side
    247,115.34x = 47,633,587,871.17
  5. Step 5: Solve for x
    x = 47,633,587,871.17/247,115.34
  6. Step 6: Final answer
    x = 192,758.52

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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.