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Finding the Fourth Proportional to 605,916.90, 908,875.35 and 457,200.90

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Solution

The fourth proportional to 605,916.90, 908,875.35 and 457,200.90 is: 685,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,916.90 : 908,875.35 = 457,200.90 : x
  2. Step 2: Convert to fraction form
    605,916.90/908,875.35 = 457,200.90/x
  3. Step 3: Cross multiply
    605,916.90x = 908,875.35 × 457,200.90
  4. Step 4: Simplify right side
    605,916.90x = 415,538,628,007.82
  5. Step 5: Solve for x
    x = 415,538,628,007.82/605,916.90
  6. Step 6: Final answer
    x = 685,801.35

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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.