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Finding the Fourth Proportional to 586,356.22, 809,173.12 and 318,084.22

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Solution

The fourth proportional to 586,356.22, 809,173.12 and 318,084.22 is: 438,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,356.22 : 809,173.12 = 318,084.22 : x
  2. Step 2: Convert to fraction form
    586,356.22/809,173.12 = 318,084.22/x
  3. Step 3: Cross multiply
    586,356.22x = 809,173.12 × 318,084.22
  4. Step 4: Simplify right side
    586,356.22x = 257,385,200,720.17
  5. Step 5: Solve for x
    x = 257,385,200,720.17/586,356.22
  6. Step 6: Final answer
    x = 438,957.06

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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.