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Finding the Fourth Proportional to 451,953.18, 623,987.56 and 280,053.56

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Solution

The fourth proportional to 451,953.18, 623,987.56 and 280,053.56 is: 386,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,953.18 : 623,987.56 = 280,053.56 : x
  2. Step 2: Convert to fraction form
    451,953.18/623,987.56 = 280,053.56/x
  3. Step 3: Cross multiply
    451,953.18x = 623,987.56 × 280,053.56
  4. Step 4: Simplify right side
    451,953.18x = 174,749,937,573.71
  5. Step 5: Solve for x
    x = 174,749,937,573.71/451,953.18
  6. Step 6: Final answer
    x = 386,654.96

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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.