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Finding the Fourth Proportional to 90,836.70, 127,302.60 and 90,836.70

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Solution

The fourth proportional to 90,836.70, 127,302.60 and 90,836.70 is: 127,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.70 : 127,302.60 = 90,836.70 : x
  2. Step 2: Convert to fraction form
    90,836.70/127,302.60 = 90,836.70/x
  3. Step 3: Cross multiply
    90,836.70x = 127,302.60 × 90,836.70
  4. Step 4: Simplify right side
    90,836.70x = 11,563,748,085.42
  5. Step 5: Solve for x
    x = 11,563,748,085.42/90,836.70
  6. Step 6: Final answer
    x = 127,302.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.