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Finding the Fourth Proportional to 612,230.05, 918,412.05 and 207,714.33

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Solution

The fourth proportional to 612,230.05, 918,412.05 and 207,714.33 is: 311,594.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,230.05 : 918,412.05 = 207,714.33 : x
  2. Step 2: Convert to fraction form
    612,230.05/918,412.05 = 207,714.33/x
  3. Step 3: Cross multiply
    612,230.05x = 918,412.05 × 207,714.33
  4. Step 4: Simplify right side
    612,230.05x = 190,767,343,629.68
  5. Step 5: Solve for x
    x = 190,767,343,629.68/612,230.05
  6. Step 6: Final answer
    x = 311,594.22

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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.