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Finding the Fourth Proportional to 570,842.19, 787,788.18 and 316,193.36

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Solution

The fourth proportional to 570,842.19, 787,788.18 and 316,193.36 is: 436,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,842.19 : 787,788.18 = 316,193.36 : x
  2. Step 2: Convert to fraction form
    570,842.19/787,788.18 = 316,193.36/x
  3. Step 3: Cross multiply
    570,842.19x = 787,788.18 × 316,193.36
  4. Step 4: Simplify right side
    570,842.19x = 249,093,387,663.54
  5. Step 5: Solve for x
    x = 249,093,387,663.54/570,842.19
  6. Step 6: Final answer
    x = 436,361.21

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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.