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Finding the Fourth Proportional to 280,107.93, 386,548.94 and 152,783.52

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Solution

The fourth proportional to 280,107.93, 386,548.94 and 152,783.52 is: 210,841.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,107.93 : 386,548.94 = 152,783.52 : x
  2. Step 2: Convert to fraction form
    280,107.93/386,548.94 = 152,783.52/x
  3. Step 3: Cross multiply
    280,107.93x = 386,548.94 × 152,783.52
  4. Step 4: Simplify right side
    280,107.93x = 59,058,306,941.55
  5. Step 5: Solve for x
    x = 59,058,306,941.55/280,107.93
  6. Step 6: Final answer
    x = 210,841.26

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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.