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Finding the Fourth Proportional to 639,059.04, 881,271.48 and 495,766.80

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Solution

The fourth proportional to 639,059.04, 881,271.48 and 495,766.80 is: 683,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,059.04 : 881,271.48 = 495,766.80 : x
  2. Step 2: Convert to fraction form
    639,059.04/881,271.48 = 495,766.80/x
  3. Step 3: Cross multiply
    639,059.04x = 881,271.48 × 495,766.80
  4. Step 4: Simplify right side
    639,059.04x = 436,905,141,570.86
  5. Step 5: Solve for x
    x = 436,905,141,570.86/639,059.04
  6. Step 6: Final answer
    x = 683,669.45

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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.