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Finding the Fourth Proportional to 260,041.06, 390,115.05 and 117,818.02

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Solution

The fourth proportional to 260,041.06, 390,115.05 and 117,818.02 is: 176,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,041.06 : 390,115.05 = 117,818.02 : x
  2. Step 2: Convert to fraction form
    260,041.06/390,115.05 = 117,818.02/x
  3. Step 3: Cross multiply
    260,041.06x = 390,115.05 × 117,818.02
  4. Step 4: Simplify right side
    260,041.06x = 45,962,582,763.20
  5. Step 5: Solve for x
    x = 45,962,582,763.20/260,041.06
  6. Step 6: Final answer
    x = 176,751.25

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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.