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Finding the Fourth Proportional to 698,703.60, 1,048,055.40 and 255,644.40

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Solution

The fourth proportional to 698,703.60, 1,048,055.40 and 255,644.40 is: 383,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,703.60 : 1,048,055.40 = 255,644.40 : x
  2. Step 2: Convert to fraction form
    698,703.60/1,048,055.40 = 255,644.40/x
  3. Step 3: Cross multiply
    698,703.60x = 1,048,055.40 × 255,644.40
  4. Step 4: Simplify right side
    698,703.60x = 267,929,493,899.76
  5. Step 5: Solve for x
    x = 267,929,493,899.76/698,703.60
  6. Step 6: Final answer
    x = 383,466.60

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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.