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Finding the Fourth Proportional to 697,557.90, 962,555.35 and 391,667.91

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Solution

The fourth proportional to 697,557.90, 962,555.35 and 391,667.91 is: 540,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,557.90 : 962,555.35 = 391,667.91 : x
  2. Step 2: Convert to fraction form
    697,557.90/962,555.35 = 391,667.91/x
  3. Step 3: Cross multiply
    697,557.90x = 962,555.35 × 391,667.91
  4. Step 4: Simplify right side
    697,557.90x = 377,002,038,339.44
  5. Step 5: Solve for x
    x = 377,002,038,339.44/697,557.90
  6. Step 6: Final answer
    x = 540,459.85

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1.5x scale

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.