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Finding the Fourth Proportional to 125,630.40, 188,445.60 and 46,728.30

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Solution

The fourth proportional to 125,630.40, 188,445.60 and 46,728.30 is: 70,092.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,630.40 : 188,445.60 = 46,728.30 : x
  2. Step 2: Convert to fraction form
    125,630.40/188,445.60 = 46,728.30/x
  3. Step 3: Cross multiply
    125,630.40x = 188,445.60 × 46,728.30
  4. Step 4: Simplify right side
    125,630.40x = 8,805,742,530.48
  5. Step 5: Solve for x
    x = 8,805,742,530.48/125,630.40
  6. Step 6: Final answer
    x = 70,092.45

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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.