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Finding the Fourth Proportional to 616,889.90, 851,310.33 and 358,828.76

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Solution

The fourth proportional to 616,889.90, 851,310.33 and 358,828.76 is: 495,185.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,889.90 : 851,310.33 = 358,828.76 : x
  2. Step 2: Convert to fraction form
    616,889.90/851,310.33 = 358,828.76/x
  3. Step 3: Cross multiply
    616,889.90x = 851,310.33 × 358,828.76
  4. Step 4: Simplify right side
    616,889.90x = 305,474,630,089.09
  5. Step 5: Solve for x
    x = 305,474,630,089.09/616,889.90
  6. Step 6: Final answer
    x = 495,185.01

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1.5x scale

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.