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Finding the Fourth Proportional to 613,728.80, 920,645.16 and 187,360.16

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Solution

The fourth proportional to 613,728.80, 920,645.16 and 187,360.16 is: 281,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,728.80 : 920,645.16 = 187,360.16 : x
  2. Step 2: Convert to fraction form
    613,728.80/920,645.16 = 187,360.16/x
  3. Step 3: Cross multiply
    613,728.80x = 920,645.16 × 187,360.16
  4. Step 4: Simplify right side
    613,728.80x = 172,492,224,480.83
  5. Step 5: Solve for x
    x = 172,492,224,480.83/613,728.80
  6. Step 6: Final answer
    x = 281,056.10

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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.