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Finding the Fourth Proportional to 518,970.24, 777,986.88 and 186,468.48

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Solution

The fourth proportional to 518,970.24, 777,986.88 and 186,468.48 is: 279,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,970.24 : 777,986.88 = 186,468.48 : x
  2. Step 2: Convert to fraction form
    518,970.24/777,986.88 = 186,468.48/x
  3. Step 3: Cross multiply
    518,970.24x = 777,986.88 × 186,468.48
  4. Step 4: Simplify right side
    518,970.24x = 145,070,030,973.54
  5. Step 5: Solve for x
    x = 145,070,030,973.54/518,970.24
  6. Step 6: Final answer
    x = 279,534.39

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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.