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Finding the Fourth Proportional to 528,000.42, 728,636.10 and 298,602.75

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Solution

The fourth proportional to 528,000.42, 728,636.10 and 298,602.75 is: 412,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,000.42 : 728,636.10 = 298,602.75 : x
  2. Step 2: Convert to fraction form
    528,000.42/728,636.10 = 298,602.75/x
  3. Step 3: Cross multiply
    528,000.42x = 728,636.10 × 298,602.75
  4. Step 4: Simplify right side
    528,000.42x = 217,572,743,209.28
  5. Step 5: Solve for x
    x = 217,572,743,209.28/528,000.42
  6. Step 6: Final answer
    x = 412,069.26

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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.