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Finding the Fourth Proportional to 867,060.40, 1,300,072.20 and 447,156.40

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Solution

The fourth proportional to 867,060.40, 1,300,072.20 and 447,156.40 is: 670,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,060.40 : 1,300,072.20 = 447,156.40 : x
  2. Step 2: Convert to fraction form
    867,060.40/1,300,072.20 = 447,156.40/x
  3. Step 3: Cross multiply
    867,060.40x = 1,300,072.20 × 447,156.40
  4. Step 4: Simplify right side
    867,060.40x = 581,335,604,692.08
  5. Step 5: Solve for x
    x = 581,335,604,692.08/867,060.40
  6. Step 6: Final answer
    x = 670,467.25

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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.