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Finding the Fourth Proportional to 571,057.68, 788,026.60 and 316,393.68

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Solution

The fourth proportional to 571,057.68, 788,026.60 and 316,393.68 is: 436,605.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,057.68 : 788,026.60 = 316,393.68 : x
  2. Step 2: Convert to fraction form
    571,057.68/788,026.60 = 316,393.68/x
  3. Step 3: Cross multiply
    571,057.68x = 788,026.60 × 316,393.68
  4. Step 4: Simplify right side
    571,057.68x = 249,326,635,911.89
  5. Step 5: Solve for x
    x = 249,326,635,911.89/571,057.68
  6. Step 6: Final answer
    x = 436,605.00

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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.