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Finding the Fourth Proportional to 127,954.30, 191,931.45 and 65,746.30

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Solution

The fourth proportional to 127,954.30, 191,931.45 and 65,746.30 is: 98,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,954.30 : 191,931.45 = 65,746.30 : x
  2. Step 2: Convert to fraction form
    127,954.30/191,931.45 = 65,746.30/x
  3. Step 3: Cross multiply
    127,954.30x = 191,931.45 × 65,746.30
  4. Step 4: Simplify right side
    127,954.30x = 12,618,782,691.14
  5. Step 5: Solve for x
    x = 12,618,782,691.14/127,954.30
  6. Step 6: Final answer
    x = 98,619.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.