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Finding the Fourth Proportional to 393,030.96, 542,397.24 and 223,293.84

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Solution

The fourth proportional to 393,030.96, 542,397.24 and 223,293.84 is: 308,153.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,030.96 : 542,397.24 = 223,293.84 : x
  2. Step 2: Convert to fraction form
    393,030.96/542,397.24 = 223,293.84/x
  3. Step 3: Cross multiply
    393,030.96x = 542,397.24 × 223,293.84
  4. Step 4: Simplify right side
    393,030.96x = 121,113,962,525.00
  5. Step 5: Solve for x
    x = 121,113,962,525.00/393,030.96
  6. Step 6: Final answer
    x = 308,153.75

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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.