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Finding the Fourth Proportional to 280,393.13, 386,944.14 and 153,070.04

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Solution

The fourth proportional to 280,393.13, 386,944.14 and 153,070.04 is: 211,237.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,393.13 : 386,944.14 = 153,070.04 : x
  2. Step 2: Convert to fraction form
    280,393.13/386,944.14 = 153,070.04/x
  3. Step 3: Cross multiply
    280,393.13x = 386,944.14 × 153,070.04
  4. Step 4: Simplify right side
    280,393.13x = 59,229,553,052.84
  5. Step 5: Solve for x
    x = 59,229,553,052.84/280,393.13
  6. Step 6: Final answer
    x = 211,237.54

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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.