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Finding the Fourth Proportional to 611,637.42, 917,410.77 and 256,637.10

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Solution

The fourth proportional to 611,637.42, 917,410.77 and 256,637.10 is: 384,936.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,637.42 : 917,410.77 = 256,637.10 : x
  2. Step 2: Convert to fraction form
    611,637.42/917,410.77 = 256,637.10/x
  3. Step 3: Cross multiply
    611,637.42x = 917,410.77 × 256,637.10
  4. Step 4: Simplify right side
    611,637.42x = 235,441,639,521.57
  5. Step 5: Solve for x
    x = 235,441,639,521.57/611,637.42
  6. Step 6: Final answer
    x = 384,936.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.