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Finding the Fourth Proportional to 657,525.60, 986,288.40 and 214,293.60

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Solution

The fourth proportional to 657,525.60, 986,288.40 and 214,293.60 is: 321,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,525.60 : 986,288.40 = 214,293.60 : x
  2. Step 2: Convert to fraction form
    657,525.60/986,288.40 = 214,293.60/x
  3. Step 3: Cross multiply
    657,525.60x = 986,288.40 × 214,293.60
  4. Step 4: Simplify right side
    657,525.60x = 211,355,291,874.24
  5. Step 5: Solve for x
    x = 211,355,291,874.24/657,525.60
  6. Step 6: Final answer
    x = 321,440.40

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Half scale
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Double scale
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Similar ratio
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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.