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Finding the Fourth Proportional to 571,438.80, 788,554.44 and 316,826.64

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Solution

The fourth proportional to 571,438.80, 788,554.44 and 316,826.64 is: 437,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,438.80 : 788,554.44 = 316,826.64 : x
  2. Step 2: Convert to fraction form
    571,438.80/788,554.44 = 316,826.64/x
  3. Step 3: Cross multiply
    571,438.80x = 788,554.44 × 316,826.64
  4. Step 4: Simplify right side
    571,438.80x = 249,835,053,682.28
  5. Step 5: Solve for x
    x = 249,835,053,682.28/571,438.80
  6. Step 6: Final answer
    x = 437,203.52

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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.