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Finding the Fourth Proportional to 686,075.01, 946,782.57 and 380,171.19

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Solution

The fourth proportional to 686,075.01, 946,782.57 and 380,171.19 is: 524,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,075.01 : 946,782.57 = 380,171.19 : x
  2. Step 2: Convert to fraction form
    686,075.01/946,782.57 = 380,171.19/x
  3. Step 3: Cross multiply
    686,075.01x = 946,782.57 × 380,171.19
  4. Step 4: Simplify right side
    686,075.01x = 359,939,456,308.16
  5. Step 5: Solve for x
    x = 359,939,456,308.16/686,075.01
  6. Step 6: Final answer
    x = 524,635.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.