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Finding the Fourth Proportional to 640,403.65, 883,841.52 and 619,373.62

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Solution

The fourth proportional to 640,403.65, 883,841.52 and 619,373.62 is: 854,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,403.65 : 883,841.52 = 619,373.62 : x
  2. Step 2: Convert to fraction form
    640,403.65/883,841.52 = 619,373.62/x
  3. Step 3: Cross multiply
    640,403.65x = 883,841.52 × 619,373.62
  4. Step 4: Simplify right side
    640,403.65x = 547,428,121,748.70
  5. Step 5: Solve for x
    x = 547,428,121,748.70/640,403.65
  6. Step 6: Final answer
    x = 854,817.30

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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.