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Finding the Fourth Proportional to 876,055.64, 1,208,958.54 and 473,647.64

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Solution

The fourth proportional to 876,055.64, 1,208,958.54 and 473,647.64 is: 653,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,055.64 : 1,208,958.54 = 473,647.64 : x
  2. Step 2: Convert to fraction form
    876,055.64/1,208,958.54 = 473,647.64/x
  3. Step 3: Cross multiply
    876,055.64x = 1,208,958.54 × 473,647.64
  4. Step 4: Simplify right side
    876,055.64x = 572,620,359,328.85
  5. Step 5: Solve for x
    x = 572,620,359,328.85/876,055.64
  6. Step 6: Final answer
    x = 653,634.69

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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.