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Finding the Fourth Proportional to 312,881.04, 431,779.16 and 183,824.92

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Solution

The fourth proportional to 312,881.04, 431,779.16 and 183,824.92 is: 253,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,881.04 : 431,779.16 = 183,824.92 : x
  2. Step 2: Convert to fraction form
    312,881.04/431,779.16 = 183,824.92/x
  3. Step 3: Cross multiply
    312,881.04x = 431,779.16 × 183,824.92
  4. Step 4: Simplify right side
    312,881.04x = 79,371,769,544.67
  5. Step 5: Solve for x
    x = 79,371,769,544.67/312,881.04
  6. Step 6: Final answer
    x = 253,680.34

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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.