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Finding the Fourth Proportional to 640,574.64, 883,420.29 and 531,506.16

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Solution

The fourth proportional to 640,574.64, 883,420.29 and 531,506.16 is: 733,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,574.64 : 883,420.29 = 531,506.16 : x
  2. Step 2: Convert to fraction form
    640,574.64/883,420.29 = 531,506.16/x
  3. Step 3: Cross multiply
    640,574.64x = 883,420.29 × 531,506.16
  4. Step 4: Simplify right side
    640,574.64x = 469,543,326,003.99
  5. Step 5: Solve for x
    x = 469,543,326,003.99/640,574.64
  6. Step 6: Final answer
    x = 733,003.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.