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Finding the Fourth Proportional to 768,841.58, 1,060,810.35 and 666,703.82

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Solution

The fourth proportional to 768,841.58, 1,060,810.35 and 666,703.82 is: 919,885.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,841.58 : 1,060,810.35 = 666,703.82 : x
  2. Step 2: Convert to fraction form
    768,841.58/1,060,810.35 = 666,703.82/x
  3. Step 3: Cross multiply
    768,841.58x = 1,060,810.35 × 666,703.82
  4. Step 4: Simplify right side
    768,841.58x = 707,246,312,640.54
  5. Step 5: Solve for x
    x = 707,246,312,640.54/768,841.58
  6. Step 6: Final answer
    x = 919,885.62

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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.