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Finding the Fourth Proportional to 874,752.80, 1,312,712.40 and 401,194.40

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Solution

The fourth proportional to 874,752.80, 1,312,712.40 and 401,194.40 is: 602,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,752.80 : 1,312,712.40 = 401,194.40 : x
  2. Step 2: Convert to fraction form
    874,752.80/1,312,712.40 = 401,194.40/x
  3. Step 3: Cross multiply
    874,752.80x = 1,312,712.40 × 401,194.40
  4. Step 4: Simplify right side
    874,752.80x = 526,652,863,690.56
  5. Step 5: Solve for x
    x = 526,652,863,690.56/874,752.80
  6. Step 6: Final answer
    x = 602,059.08

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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.