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Finding the Fourth Proportional to 443,576.71, 611,498.51 and 316,030.87

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Solution

The fourth proportional to 443,576.71, 611,498.51 and 316,030.87 is: 435,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,576.71 : 611,498.51 = 316,030.87 : x
  2. Step 2: Convert to fraction form
    443,576.71/611,498.51 = 316,030.87/x
  3. Step 3: Cross multiply
    443,576.71x = 611,498.51 × 316,030.87
  4. Step 4: Simplify right side
    443,576.71x = 193,252,406,119.00
  5. Step 5: Solve for x
    x = 193,252,406,119.00/443,576.71
  6. Step 6: Final answer
    x = 435,668.51

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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.