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Finding the Fourth Proportional to 262,445.94, 393,656.36 and 120,209.13

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Solution

The fourth proportional to 262,445.94, 393,656.36 and 120,209.13 is: 180,307.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,445.94 : 393,656.36 = 120,209.13 : x
  2. Step 2: Convert to fraction form
    262,445.94/393,656.36 = 120,209.13/x
  3. Step 3: Cross multiply
    262,445.94x = 393,656.36 × 120,209.13
  4. Step 4: Simplify right side
    262,445.94x = 47,321,087,953.52
  5. Step 5: Solve for x
    x = 47,321,087,953.52/262,445.94
  6. Step 6: Final answer
    x = 180,307.94

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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.