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Finding the Fourth Proportional to 329,816.90, 455,157.48 and 186,574.07

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Solution

The fourth proportional to 329,816.90, 455,157.48 and 186,574.07 is: 257,477.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,816.90 : 455,157.48 = 186,574.07 : x
  2. Step 2: Convert to fraction form
    329,816.90/455,157.48 = 186,574.07/x
  3. Step 3: Cross multiply
    329,816.90x = 455,157.48 × 186,574.07
  4. Step 4: Simplify right side
    329,816.90x = 84,920,581,258.76
  5. Step 5: Solve for x
    x = 84,920,581,258.76/329,816.90
  6. Step 6: Final answer
    x = 257,477.96

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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.