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Finding the Fourth Proportional to 690,641.88, 953,232.81 and 464,156.16

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Solution

The fourth proportional to 690,641.88, 953,232.81 and 464,156.16 is: 640,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,641.88 : 953,232.81 = 464,156.16 : x
  2. Step 2: Convert to fraction form
    690,641.88/953,232.81 = 464,156.16/x
  3. Step 3: Cross multiply
    690,641.88x = 953,232.81 × 464,156.16
  4. Step 4: Simplify right side
    690,641.88x = 442,448,880,675.61
  5. Step 5: Solve for x
    x = 442,448,880,675.61/690,641.88
  6. Step 6: Final answer
    x = 640,634.30

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