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Finding the Fourth Proportional to 620,365.10, 930,812.15 and 350,530.31

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Solution

The fourth proportional to 620,365.10, 930,812.15 and 350,530.31 is: 525,944.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,365.10 : 930,812.15 = 350,530.31 : x
  2. Step 2: Convert to fraction form
    620,365.10/930,812.15 = 350,530.31/x
  3. Step 3: Cross multiply
    620,365.10x = 930,812.15 × 350,530.31
  4. Step 4: Simplify right side
    620,365.10x = 326,277,865,084.55
  5. Step 5: Solve for x
    x = 326,277,865,084.55/620,365.10
  6. Step 6: Final answer
    x = 525,944.91

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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.