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Finding the Fourth Proportional to 556,672.55, 767,700.90 and 470,811.56

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Solution

The fourth proportional to 556,672.55, 767,700.90 and 470,811.56 is: 649,290.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,672.55 : 767,700.90 = 470,811.56 : x
  2. Step 2: Convert to fraction form
    556,672.55/767,700.90 = 470,811.56/x
  3. Step 3: Cross multiply
    556,672.55x = 767,700.90 × 470,811.56
  4. Step 4: Simplify right side
    556,672.55x = 361,442,454,503.90
  5. Step 5: Solve for x
    x = 361,442,454,503.90/556,672.55
  6. Step 6: Final answer
    x = 649,290.97

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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.