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Finding the Fourth Proportional to 260,465.80, 390,698.70 and 233,432.20

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Solution

The fourth proportional to 260,465.80, 390,698.70 and 233,432.20 is: 350,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,465.80 : 390,698.70 = 233,432.20 : x
  2. Step 2: Convert to fraction form
    260,465.80/390,698.70 = 233,432.20/x
  3. Step 3: Cross multiply
    260,465.80x = 390,698.70 × 233,432.20
  4. Step 4: Simplify right side
    260,465.80x = 91,201,657,078.14
  5. Step 5: Solve for x
    x = 91,201,657,078.14/260,465.80
  6. Step 6: Final answer
    x = 350,148.30

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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.