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Finding the Fourth Proportional to 611,458.86, 913,070.85 and 499,361.61

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Solution

The fourth proportional to 611,458.86, 913,070.85 and 499,361.61 is: 745,679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,458.86 : 913,070.85 = 499,361.61 : x
  2. Step 2: Convert to fraction form
    611,458.86/913,070.85 = 499,361.61/x
  3. Step 3: Cross multiply
    611,458.86x = 913,070.85 × 499,361.61
  4. Step 4: Simplify right side
    611,458.86x = 455,952,529,700.07
  5. Step 5: Solve for x
    x = 455,952,529,700.07/611,458.86
  6. Step 6: Final answer
    x = 745,679.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.