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Finding the Fourth Proportional to 637,685.16, 880,045.30 and 351,205.16

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Solution

The fourth proportional to 637,685.16, 880,045.30 and 351,205.16 is: 484,685.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,685.16 : 880,045.30 = 351,205.16 : x
  2. Step 2: Convert to fraction form
    637,685.16/880,045.30 = 351,205.16/x
  3. Step 3: Cross multiply
    637,685.16x = 880,045.30 × 351,205.16
  4. Step 4: Simplify right side
    637,685.16x = 309,076,450,393.75
  5. Step 5: Solve for x
    x = 309,076,450,393.75/637,685.16
  6. Step 6: Final answer
    x = 484,685.03

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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.