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Finding the Fourth Proportional to 616,703.10, 851,085.27 and 348,431.10

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Solution

The fourth proportional to 616,703.10, 851,085.27 and 348,431.10 is: 480,854.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,703.10 : 851,085.27 = 348,431.10 : x
  2. Step 2: Convert to fraction form
    616,703.10/851,085.27 = 348,431.10/x
  3. Step 3: Cross multiply
    616,703.10x = 851,085.27 × 348,431.10
  4. Step 4: Simplify right side
    616,703.10x = 296,544,576,819.90
  5. Step 5: Solve for x
    x = 296,544,576,819.90/616,703.10
  6. Step 6: Final answer
    x = 480,854.69

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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.