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Finding the Fourth Proportional to 624,965.40, 931,960.17 and 619,281.90

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Solution

The fourth proportional to 624,965.40, 931,960.17 and 619,281.90 is: 923,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,965.40 : 931,960.17 = 619,281.90 : x
  2. Step 2: Convert to fraction form
    624,965.40/931,960.17 = 619,281.90/x
  3. Step 3: Cross multiply
    624,965.40x = 931,960.17 × 619,281.90
  4. Step 4: Simplify right side
    624,965.40x = 577,146,064,801.92
  5. Step 5: Solve for x
    x = 577,146,064,801.92/624,965.40
  6. Step 6: Final answer
    x = 923,484.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.