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Finding the Fourth Proportional to 353,887.20, 530,830.80 and 117,237.60

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Solution

The fourth proportional to 353,887.20, 530,830.80 and 117,237.60 is: 175,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,887.20 : 530,830.80 = 117,237.60 : x
  2. Step 2: Convert to fraction form
    353,887.20/530,830.80 = 117,237.60/x
  3. Step 3: Cross multiply
    353,887.20x = 530,830.80 × 117,237.60
  4. Step 4: Simplify right side
    353,887.20x = 62,233,328,998.08
  5. Step 5: Solve for x
    x = 62,233,328,998.08/353,887.20
  6. Step 6: Final answer
    x = 175,856.40

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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.