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Finding the Fourth Proportional to 5,335.47, 7,362.95 and 2,978.07

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Solution

The fourth proportional to 5,335.47, 7,362.95 and 2,978.07 is: 4,109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.47 : 7,362.95 = 2,978.07 : x
  2. Step 2: Convert to fraction form
    5,335.47/7,362.95 = 2,978.07/x
  3. Step 3: Cross multiply
    5,335.47x = 7,362.95 × 2,978.07
  4. Step 4: Simplify right side
    5,335.47x = 21,927,380.51
  5. Step 5: Solve for x
    x = 21,927,380.51/5,335.47
  6. Step 6: Final answer
    x = 4,109.74

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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.