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Finding the Fourth Proportional to 127,106.88, 175,415.80 and 73,394.16

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Solution

The fourth proportional to 127,106.88, 175,415.80 and 73,394.16 is: 101,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,106.88 : 175,415.80 = 73,394.16 : x
  2. Step 2: Convert to fraction form
    127,106.88/175,415.80 = 73,394.16/x
  3. Step 3: Cross multiply
    127,106.88x = 175,415.80 × 73,394.16
  4. Step 4: Simplify right side
    127,106.88x = 12,874,495,291.73
  5. Step 5: Solve for x
    x = 12,874,495,291.73/127,106.88
  6. Step 6: Final answer
    x = 101,288.74

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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.