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Finding the Fourth Proportional to 157,298.40, 236,101.20 and 78,501.60

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Solution

The fourth proportional to 157,298.40, 236,101.20 and 78,501.60 is: 117,829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,298.40 : 236,101.20 = 78,501.60 : x
  2. Step 2: Convert to fraction form
    157,298.40/236,101.20 = 78,501.60/x
  3. Step 3: Cross multiply
    157,298.40x = 236,101.20 × 78,501.60
  4. Step 4: Simplify right side
    157,298.40x = 18,534,321,961.92
  5. Step 5: Solve for x
    x = 18,534,321,961.92/157,298.40
  6. Step 6: Final answer
    x = 117,829.06

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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.