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Finding the Fourth Proportional to 557,675.19, 769,661.51 and 316,035.59

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Solution

The fourth proportional to 557,675.19, 769,661.51 and 316,035.59 is: 436,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,675.19 : 769,661.51 = 316,035.59 : x
  2. Step 2: Convert to fraction form
    557,675.19/769,661.51 = 316,035.59/x
  3. Step 3: Cross multiply
    557,675.19x = 769,661.51 × 316,035.59
  4. Step 4: Simplify right side
    557,675.19x = 243,240,423,984.66
  5. Step 5: Solve for x
    x = 243,240,423,984.66/557,675.19
  6. Step 6: Final answer
    x = 436,168.63

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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.