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Finding the Fourth Proportional to 285,215, 393,863.40 and 183,417.24

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Solution

The fourth proportional to 285,215, 393,863.40 and 183,417.24 is: 253,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,215 : 393,863.40 = 183,417.24 : x
  2. Step 2: Convert to fraction form
    285,215/393,863.40 = 183,417.24/x
  3. Step 3: Cross multiply
    285,215x = 393,863.40 × 183,417.24
  4. Step 4: Simplify right side
    285,215x = 72,241,337,765.02
  5. Step 5: Solve for x
    x = 72,241,337,765.02/285,215
  6. Step 6: Final answer
    x = 253,287.30

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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.