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Finding the Fourth Proportional to 127,643.60, 191,465.40 and 101,205.20

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Solution

The fourth proportional to 127,643.60, 191,465.40 and 101,205.20 is: 151,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,643.60 : 191,465.40 = 101,205.20 : x
  2. Step 2: Convert to fraction form
    127,643.60/191,465.40 = 101,205.20/x
  3. Step 3: Cross multiply
    127,643.60x = 191,465.40 × 101,205.20
  4. Step 4: Simplify right side
    127,643.60x = 19,377,294,100.08
  5. Step 5: Solve for x
    x = 19,377,294,100.08/127,643.60
  6. Step 6: Final answer
    x = 151,807.80

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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.