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Finding the Fourth Proportional to 639,509.06, 882,538.55 and 363,851.72

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Solution

The fourth proportional to 639,509.06, 882,538.55 and 363,851.72 is: 502,124.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,509.06 : 882,538.55 = 363,851.72 : x
  2. Step 2: Convert to fraction form
    639,509.06/882,538.55 = 363,851.72/x
  3. Step 3: Cross multiply
    639,509.06x = 882,538.55 × 363,851.72
  4. Step 4: Simplify right side
    639,509.06x = 321,113,169,383.81
  5. Step 5: Solve for x
    x = 321,113,169,383.81/639,509.06
  6. Step 6: Final answer
    x = 502,124.50

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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.