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Finding the Fourth Proportional to 94,970.80, 142,456.20 and 53,412.40

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Solution

The fourth proportional to 94,970.80, 142,456.20 and 53,412.40 is: 80,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,970.80 : 142,456.20 = 53,412.40 : x
  2. Step 2: Convert to fraction form
    94,970.80/142,456.20 = 53,412.40/x
  3. Step 3: Cross multiply
    94,970.80x = 142,456.20 × 53,412.40
  4. Step 4: Simplify right side
    94,970.80x = 7,608,927,536.88
  5. Step 5: Solve for x
    x = 7,608,927,536.88/94,970.80
  6. Step 6: Final answer
    x = 80,118.60

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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.