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Finding the Fourth Proportional to 889,603.20, 1,334,404.80 and 590,486.40

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Solution

The fourth proportional to 889,603.20, 1,334,404.80 and 590,486.40 is: 885,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,603.20 : 1,334,404.80 = 590,486.40 : x
  2. Step 2: Convert to fraction form
    889,603.20/1,334,404.80 = 590,486.40/x
  3. Step 3: Cross multiply
    889,603.20x = 1,334,404.80 × 590,486.40
  4. Step 4: Simplify right side
    889,603.20x = 787,947,886,494.72
  5. Step 5: Solve for x
    x = 787,947,886,494.72/889,603.20
  6. Step 6: Final answer
    x = 885,729.60

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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.