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Finding the Fourth Proportional to 280,195.36, 386,670.88 and 152,873.60

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Solution

The fourth proportional to 280,195.36, 386,670.88 and 152,873.60 is: 210,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,195.36 : 386,670.88 = 152,873.60 : x
  2. Step 2: Convert to fraction form
    280,195.36/386,670.88 = 152,873.60/x
  3. Step 3: Cross multiply
    280,195.36x = 386,670.88 × 152,873.60
  4. Step 4: Simplify right side
    280,195.36x = 59,111,769,440.77
  5. Step 5: Solve for x
    x = 59,111,769,440.77/280,195.36
  6. Step 6: Final answer
    x = 210,966.27

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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.