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Finding the Fourth Proportional to 879,063.54, 1,213,115.04 and 476,655.54

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Solution

The fourth proportional to 879,063.54, 1,213,115.04 and 476,655.54 is: 657,788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,063.54 : 1,213,115.04 = 476,655.54 : x
  2. Step 2: Convert to fraction form
    879,063.54/1,213,115.04 = 476,655.54/x
  3. Step 3: Cross multiply
    879,063.54x = 1,213,115.04 × 476,655.54
  4. Step 4: Simplify right side
    879,063.54x = 578,238,004,473.32
  5. Step 5: Solve for x
    x = 578,238,004,473.32/879,063.54
  6. Step 6: Final answer
    x = 657,788.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.