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Finding the Fourth Proportional to 611,953.66, 917,930.34 and 191,229.55

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Solution

The fourth proportional to 611,953.66, 917,930.34 and 191,229.55 is: 286,844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,953.66 : 917,930.34 = 191,229.55 : x
  2. Step 2: Convert to fraction form
    611,953.66/917,930.34 = 191,229.55/x
  3. Step 3: Cross multiply
    611,953.66x = 917,930.34 × 191,229.55
  4. Step 4: Simplify right side
    611,953.66x = 175,535,405,849.55
  5. Step 5: Solve for x
    x = 175,535,405,849.55/611,953.66
  6. Step 6: Final answer
    x = 286,844.28

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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.