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Finding the Fourth Proportional to 91,886.51, 127,030.80 and 91,044.92

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Solution

The fourth proportional to 91,886.51, 127,030.80 and 91,044.92 is: 125,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,886.51 : 127,030.80 = 91,044.92 : x
  2. Step 2: Convert to fraction form
    91,886.51/127,030.80 = 91,044.92/x
  3. Step 3: Cross multiply
    91,886.51x = 127,030.80 × 91,044.92
  4. Step 4: Simplify right side
    91,886.51x = 11,565,507,933.16
  5. Step 5: Solve for x
    x = 11,565,507,933.16/91,886.51
  6. Step 6: Final answer
    x = 125,867.32

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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.