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Finding the Fourth Proportional to 280,334.52, 386,864.52 and 153,012.24

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Solution

The fourth proportional to 280,334.52, 386,864.52 and 153,012.24 is: 211,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,334.52 : 386,864.52 = 153,012.24 : x
  2. Step 2: Convert to fraction form
    280,334.52/386,864.52 = 153,012.24/x
  3. Step 3: Cross multiply
    280,334.52x = 386,864.52 × 153,012.24
  4. Step 4: Simplify right side
    280,334.52x = 59,195,006,781.72
  5. Step 5: Solve for x
    x = 59,195,006,781.72/280,334.52
  6. Step 6: Final answer
    x = 211,158.46

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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.