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Finding the Fourth Proportional to 571,263.90, 788,344.82 and 316,615.29

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Solution

The fourth proportional to 571,263.90, 788,344.82 and 316,615.29 is: 436,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,263.90 : 788,344.82 = 316,615.29 : x
  2. Step 2: Convert to fraction form
    571,263.90/788,344.82 = 316,615.29/x
  3. Step 3: Cross multiply
    571,263.90x = 788,344.82 × 316,615.29
  4. Step 4: Simplify right side
    571,263.90x = 249,602,023,804.30
  5. Step 5: Solve for x
    x = 249,602,023,804.30/571,263.90
  6. Step 6: Final answer
    x = 436,929.45

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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.