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Finding the Fourth Proportional to 622,557.16, 859,132.42 and 354,285.16

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Solution

The fourth proportional to 622,557.16, 859,132.42 and 354,285.16 is: 488,915.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,557.16 : 859,132.42 = 354,285.16 : x
  2. Step 2: Convert to fraction form
    622,557.16/859,132.42 = 354,285.16/x
  3. Step 3: Cross multiply
    622,557.16x = 859,132.42 × 354,285.16
  4. Step 4: Simplify right side
    622,557.16x = 304,377,866,880.89
  5. Step 5: Solve for x
    x = 304,377,866,880.89/622,557.16
  6. Step 6: Final answer
    x = 488,915.53

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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.