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Finding the Fourth Proportional to 587,176.56, 810,307.80 and 318,904.56

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Solution

The fourth proportional to 587,176.56, 810,307.80 and 318,904.56 is: 440,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,176.56 : 810,307.80 = 318,904.56 : x
  2. Step 2: Convert to fraction form
    587,176.56/810,307.80 = 318,904.56/x
  3. Step 3: Cross multiply
    587,176.56x = 810,307.80 × 318,904.56
  4. Step 4: Simplify right side
    587,176.56x = 258,410,852,423.57
  5. Step 5: Solve for x
    x = 258,410,852,423.57/587,176.56
  6. Step 6: Final answer
    x = 440,090.55

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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.