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Finding the Fourth Proportional to 617,913.30, 926,869.95 and 262,938.90

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Solution

The fourth proportional to 617,913.30, 926,869.95 and 262,938.90 is: 394,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,913.30 : 926,869.95 = 262,938.90 : x
  2. Step 2: Convert to fraction form
    617,913.30/926,869.95 = 262,938.90/x
  3. Step 3: Cross multiply
    617,913.30x = 926,869.95 × 262,938.90
  4. Step 4: Simplify right side
    617,913.30x = 243,710,165,096.06
  5. Step 5: Solve for x
    x = 243,710,165,096.06/617,913.30
  6. Step 6: Final answer
    x = 394,408.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.