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Finding the Fourth Proportional to 640,039.51, 883,281.27 and 368,107.53

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Solution

The fourth proportional to 640,039.51, 883,281.27 and 368,107.53 is: 508,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,039.51 : 883,281.27 = 368,107.53 : x
  2. Step 2: Convert to fraction form
    640,039.51/883,281.27 = 368,107.53/x
  3. Step 3: Cross multiply
    640,039.51x = 883,281.27 × 368,107.53
  4. Step 4: Simplify right side
    640,039.51x = 325,142,486,594.96
  5. Step 5: Solve for x
    x = 325,142,486,594.96/640,039.51
  6. Step 6: Final answer
    x = 508,003.77

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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.