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Finding the Fourth Proportional to 611,438.02, 913,039.59 and 499,340.60

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Solution

The fourth proportional to 611,438.02, 913,039.59 and 499,340.60 is: 745,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,438.02 : 913,039.59 = 499,340.60 : x
  2. Step 2: Convert to fraction form
    611,438.02/913,039.59 = 499,340.60/x
  3. Step 3: Cross multiply
    611,438.02x = 913,039.59 × 499,340.60
  4. Step 4: Simplify right side
    611,438.02x = 455,917,737,425.58
  5. Step 5: Solve for x
    x = 455,917,737,425.58/611,438.02
  6. Step 6: Final answer
    x = 745,648.33

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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.