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Finding the Fourth Proportional to 626,878.76, 865,092.68 and 358,606.76

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Solution

The fourth proportional to 626,878.76, 865,092.68 and 358,606.76 is: 494,877.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,878.76 : 865,092.68 = 358,606.76 : x
  2. Step 2: Convert to fraction form
    626,878.76/865,092.68 = 358,606.76/x
  3. Step 3: Cross multiply
    626,878.76x = 865,092.68 × 358,606.76
  4. Step 4: Simplify right side
    626,878.76x = 310,228,083,074.52
  5. Step 5: Solve for x
    x = 310,228,083,074.52/626,878.76
  6. Step 6: Final answer
    x = 494,877.32

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Half scale
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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.