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Finding the Fourth Proportional to 656,087.55, 899,495.96 and 644,130.12

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Solution

The fourth proportional to 656,087.55, 899,495.96 and 644,130.12 is: 883,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,087.55 : 899,495.96 = 644,130.12 : x
  2. Step 2: Convert to fraction form
    656,087.55/899,495.96 = 644,130.12/x
  3. Step 3: Cross multiply
    656,087.55x = 899,495.96 × 644,130.12
  4. Step 4: Simplify right side
    656,087.55x = 579,392,440,654.32
  5. Step 5: Solve for x
    x = 579,392,440,654.32/656,087.55
  6. Step 6: Final answer
    x = 883,102.32

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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 (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.