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Finding the Fourth Proportional to 525,020.40, 786,623.40 and 243,961.20

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Solution

The fourth proportional to 525,020.40, 786,623.40 and 243,961.20 is: 365,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,020.40 : 786,623.40 = 243,961.20 : x
  2. Step 2: Convert to fraction form
    525,020.40/786,623.40 = 243,961.20/x
  3. Step 3: Cross multiply
    525,020.40x = 786,623.40 × 243,961.20
  4. Step 4: Simplify right side
    525,020.40x = 191,905,588,612.08
  5. Step 5: Solve for x
    x = 191,905,588,612.08/525,020.40
  6. Step 6: Final answer
    x = 365,520.25

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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.