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Finding the Fourth Proportional to 354,130.69, 488,686.13 and 192,982.31

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Solution

The fourth proportional to 354,130.69, 488,686.13 and 192,982.31 is: 266,307.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,130.69 : 488,686.13 = 192,982.31 : x
  2. Step 2: Convert to fraction form
    354,130.69/488,686.13 = 192,982.31/x
  3. Step 3: Cross multiply
    354,130.69x = 488,686.13 × 192,982.31
  4. Step 4: Simplify right side
    354,130.69x = 94,307,778,232.36
  5. Step 5: Solve for x
    x = 94,307,778,232.36/354,130.69
  6. Step 6: Final answer
    x = 266,307.84

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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.