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Finding the Fourth Proportional to 611,158.90, 917,066.40 and 256,208.80

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Solution

The fourth proportional to 611,158.90, 917,066.40 and 256,208.80 is: 384,450.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,158.90 : 917,066.40 = 256,208.80 : x
  2. Step 2: Convert to fraction form
    611,158.90/917,066.40 = 256,208.80/x
  3. Step 3: Cross multiply
    611,158.90x = 917,066.40 × 256,208.80
  4. Step 4: Simplify right side
    611,158.90x = 234,960,481,864.32
  5. Step 5: Solve for x
    x = 234,960,481,864.32/611,158.90
  6. Step 6: Final answer
    x = 384,450.72

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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.