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Finding the Fourth Proportional to 328,989.61, 453,980.32 and 185,763.79

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Solution

The fourth proportional to 328,989.61, 453,980.32 and 185,763.79 is: 256,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,989.61 : 453,980.32 = 185,763.79 : x
  2. Step 2: Convert to fraction form
    328,989.61/453,980.32 = 185,763.79/x
  3. Step 3: Cross multiply
    328,989.61x = 453,980.32 × 185,763.79
  4. Step 4: Simplify right side
    328,989.61x = 84,333,104,828.61
  5. Step 5: Solve for x
    x = 84,333,104,828.61/328,989.61
  6. Step 6: Final answer
    x = 256,339.72

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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.