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Finding the Fourth Proportional to 611,785.14, 916,642.10 and 374,632.52

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Solution

The fourth proportional to 611,785.14, 916,642.10 and 374,632.52 is: 561,314.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,785.14 : 916,642.10 = 374,632.52 : x
  2. Step 2: Convert to fraction form
    611,785.14/916,642.10 = 374,632.52/x
  3. Step 3: Cross multiply
    611,785.14x = 916,642.10 × 374,632.52
  4. Step 4: Simplify right side
    611,785.14x = 343,403,939,861.09
  5. Step 5: Solve for x
    x = 343,403,939,861.09/611,785.14
  6. Step 6: Final answer
    x = 561,314.61

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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.