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Finding the Fourth Proportional to 707,215.80, 1,059,657.30 and 606,905.40

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Solution

The fourth proportional to 707,215.80, 1,059,657.30 and 606,905.40 is: 909,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,215.80 : 1,059,657.30 = 606,905.40 : x
  2. Step 2: Convert to fraction form
    707,215.80/1,059,657.30 = 606,905.40/x
  3. Step 3: Cross multiply
    707,215.80x = 1,059,657.30 × 606,905.40
  4. Step 4: Simplify right side
    707,215.80x = 643,111,737,519.42
  5. Step 5: Solve for x
    x = 643,111,737,519.42/707,215.80
  6. Step 6: Final answer
    x = 909,357.14

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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.