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Finding the Fourth Proportional to 619,961.71, 855,546.82 and 348,030.13

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Solution

The fourth proportional to 619,961.71, 855,546.82 and 348,030.13 is: 480,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,961.71 : 855,546.82 = 348,030.13 : x
  2. Step 2: Convert to fraction form
    619,961.71/855,546.82 = 348,030.13/x
  3. Step 3: Cross multiply
    619,961.71x = 855,546.82 × 348,030.13
  4. Step 4: Simplify right side
    619,961.71x = 297,756,070,985.69
  5. Step 5: Solve for x
    x = 297,756,070,985.69/619,961.71
  6. Step 6: Final answer
    x = 480,281.39

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Double scale
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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.