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Finding the Fourth Proportional to 265,798.08, 398,698.55 and 66,118.46

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Solution

The fourth proportional to 265,798.08, 398,698.55 and 66,118.46 is: 99,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,798.08 : 398,698.55 = 66,118.46 : x
  2. Step 2: Convert to fraction form
    265,798.08/398,698.55 = 66,118.46/x
  3. Step 3: Cross multiply
    265,798.08x = 398,698.55 × 66,118.46
  4. Step 4: Simplify right side
    265,798.08x = 26,361,334,130.23
  5. Step 5: Solve for x
    x = 26,361,334,130.23/265,798.08
  6. Step 6: Final answer
    x = 99,178.05

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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.