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Finding the Fourth Proportional to 853,590.17, 1,177,978.20 and 471,641.57

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Solution

The fourth proportional to 853,590.17, 1,177,978.20 and 471,641.57 is: 650,878.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,590.17 : 1,177,978.20 = 471,641.57 : x
  2. Step 2: Convert to fraction form
    853,590.17/1,177,978.20 = 471,641.57/x
  3. Step 3: Cross multiply
    853,590.17x = 1,177,978.20 × 471,641.57
  4. Step 4: Simplify right side
    853,590.17x = 555,583,487,673.77
  5. Step 5: Solve for x
    x = 555,583,487,673.77/853,590.17
  6. Step 6: Final answer
    x = 650,878.50

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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.