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Finding the Fourth Proportional to 570,325.65, 786,967.02 and 315,676.23

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Solution

The fourth proportional to 570,325.65, 786,967.02 and 315,676.23 is: 435,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,325.65 : 786,967.02 = 315,676.23 : x
  2. Step 2: Convert to fraction form
    570,325.65/786,967.02 = 315,676.23/x
  3. Step 3: Cross multiply
    570,325.65x = 786,967.02 × 315,676.23
  4. Step 4: Simplify right side
    570,325.65x = 248,426,782,007.94
  5. Step 5: Solve for x
    x = 248,426,782,007.94/570,325.65
  6. Step 6: Final answer
    x = 435,587.60

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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.