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Finding the Fourth Proportional to 935,164.62, 1,290,526.62 and 505,444.77

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Solution

The fourth proportional to 935,164.62, 1,290,526.62 and 505,444.77 is: 697,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,164.62 : 1,290,526.62 = 505,444.77 : x
  2. Step 2: Convert to fraction form
    935,164.62/1,290,526.62 = 505,444.77/x
  3. Step 3: Cross multiply
    935,164.62x = 1,290,526.62 × 505,444.77
  4. Step 4: Simplify right side
    935,164.62x = 652,289,930,624.78
  5. Step 5: Solve for x
    x = 652,289,930,624.78/935,164.62
  6. Step 6: Final answer
    x = 697,513.48

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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.