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Finding the Fourth Proportional to 556,634.02, 768,156.40 and 301,985.22

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Solution

The fourth proportional to 556,634.02, 768,156.40 and 301,985.22 is: 416,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,634.02 : 768,156.40 = 301,985.22 : x
  2. Step 2: Convert to fraction form
    556,634.02/768,156.40 = 301,985.22/x
  3. Step 3: Cross multiply
    556,634.02x = 768,156.40 × 301,985.22
  4. Step 4: Simplify right side
    556,634.02x = 231,971,879,448.41
  5. Step 5: Solve for x
    x = 231,971,879,448.41/556,634.02
  6. Step 6: Final answer
    x = 416,740.39

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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.