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Finding the Fourth Proportional to 527,955.90, 728,576.84 and 286,237.72

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Solution

The fourth proportional to 527,955.90, 728,576.84 and 286,237.72 is: 395,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,955.90 : 728,576.84 = 286,237.72 : x
  2. Step 2: Convert to fraction form
    527,955.90/728,576.84 = 286,237.72/x
  3. Step 3: Cross multiply
    527,955.90x = 728,576.84 × 286,237.72
  4. Step 4: Simplify right side
    527,955.90x = 208,546,173,526.41
  5. Step 5: Solve for x
    x = 208,546,173,526.41/527,955.90
  6. Step 6: Final answer
    x = 395,006.81

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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.