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Finding the Fourth Proportional to 876,656.70, 1,314,985.05 and 856,973.70

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Solution

The fourth proportional to 876,656.70, 1,314,985.05 and 856,973.70 is: 1,285,460.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,656.70 : 1,314,985.05 = 856,973.70 : x
  2. Step 2: Convert to fraction form
    876,656.70/1,314,985.05 = 856,973.70/x
  3. Step 3: Cross multiply
    876,656.70x = 1,314,985.05 × 856,973.70
  4. Step 4: Simplify right side
    876,656.70x = 1,126,907,603,743.19
  5. Step 5: Solve for x
    x = 1,126,907,603,743.19/876,656.70
  6. Step 6: Final answer
    x = 1,285,460.55

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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.