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Finding the Fourth Proportional to 647,648.80, 970,598.40 and 433,808.80

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Solution

The fourth proportional to 647,648.80, 970,598.40 and 433,808.80 is: 650,127.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,648.80 : 970,598.40 = 433,808.80 : x
  2. Step 2: Convert to fraction form
    647,648.80/970,598.40 = 433,808.80/x
  3. Step 3: Cross multiply
    647,648.80x = 970,598.40 × 433,808.80
  4. Step 4: Simplify right side
    647,648.80x = 421,054,127,185.92
  5. Step 5: Solve for x
    x = 421,054,127,185.92/647,648.80
  6. Step 6: Final answer
    x = 650,127.24

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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.