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Finding the Fourth Proportional to 528,986.40, 730,224.67 and 357,137.11

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Solution

The fourth proportional to 528,986.40, 730,224.67 and 357,137.11 is: 493,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,986.40 : 730,224.67 = 357,137.11 : x
  2. Step 2: Convert to fraction form
    528,986.40/730,224.67 = 357,137.11/x
  3. Step 3: Cross multiply
    528,986.40x = 730,224.67 × 357,137.11
  4. Step 4: Simplify right side
    528,986.40x = 260,790,328,294.50
  5. Step 5: Solve for x
    x = 260,790,328,294.50/528,986.40
  6. Step 6: Final answer
    x = 493,000.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.