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Finding the Fourth Proportional to 316,307.81, 474,461.72 and 79,668.94

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Solution

The fourth proportional to 316,307.81, 474,461.72 and 79,668.94 is: 119,503.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,307.81 : 474,461.72 = 79,668.94 : x
  2. Step 2: Convert to fraction form
    316,307.81/474,461.72 = 79,668.94/x
  3. Step 3: Cross multiply
    316,307.81x = 474,461.72 × 79,668.94
  4. Step 4: Simplify right side
    316,307.81x = 37,799,862,302.98
  5. Step 5: Solve for x
    x = 37,799,862,302.98/316,307.81
  6. Step 6: Final answer
    x = 119,503.41

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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.