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Finding the Fourth Proportional to 656,145.12, 899,574.84 and 644,187.68

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Solution

The fourth proportional to 656,145.12, 899,574.84 and 644,187.68 is: 883,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,145.12 : 899,574.84 = 644,187.68 : x
  2. Step 2: Convert to fraction form
    656,145.12/899,574.84 = 644,187.68/x
  3. Step 3: Cross multiply
    656,145.12x = 899,574.84 × 644,187.68
  4. Step 4: Simplify right side
    656,145.12x = 579,495,029,165.97
  5. Step 5: Solve for x
    x = 579,495,029,165.97/656,145.12
  6. Step 6: Final answer
    x = 883,181.19

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Double scale
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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.