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Finding the Fourth Proportional to 886,661.30, 1,329,603.15 and 354,005.30

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Solution

The fourth proportional to 886,661.30, 1,329,603.15 and 354,005.30 is: 530,852.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,661.30 : 1,329,603.15 = 354,005.30 : x
  2. Step 2: Convert to fraction form
    886,661.30/1,329,603.15 = 354,005.30/x
  3. Step 3: Cross multiply
    886,661.30x = 1,329,603.15 × 354,005.30
  4. Step 4: Simplify right side
    886,661.30x = 470,686,561,996.70
  5. Step 5: Solve for x
    x = 470,686,561,996.70/886,661.30
  6. Step 6: Final answer
    x = 530,852.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.