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Finding the Fourth Proportional to 523,877.60, 785,816.40 and 418,901.60

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Solution

The fourth proportional to 523,877.60, 785,816.40 and 418,901.60 is: 628,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,877.60 : 785,816.40 = 418,901.60 : x
  2. Step 2: Convert to fraction form
    523,877.60/785,816.40 = 418,901.60/x
  3. Step 3: Cross multiply
    523,877.60x = 785,816.40 × 418,901.60
  4. Step 4: Simplify right side
    523,877.60x = 329,179,747,266.24
  5. Step 5: Solve for x
    x = 329,179,747,266.24/523,877.60
  6. Step 6: Final answer
    x = 628,352.40

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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.