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Finding the Fourth Proportional to 90,646.63, 124,991.51 and 61,970.97

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Solution

The fourth proportional to 90,646.63, 124,991.51 and 61,970.97 is: 85,451.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,646.63 : 124,991.51 = 61,970.97 : x
  2. Step 2: Convert to fraction form
    90,646.63/124,991.51 = 61,970.97/x
  3. Step 3: Cross multiply
    90,646.63x = 124,991.51 × 61,970.97
  4. Step 4: Simplify right side
    90,646.63x = 7,745,845,275.33
  5. Step 5: Solve for x
    x = 7,745,845,275.33/90,646.63
  6. Step 6: Final answer
    x = 85,451.00

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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.