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Finding the Fourth Proportional to 616,695.78, 851,182.38 and 401,460.96

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Solution

The fourth proportional to 616,695.78, 851,182.38 and 401,460.96 is: 554,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,695.78 : 851,182.38 = 401,460.96 : x
  2. Step 2: Convert to fraction form
    616,695.78/851,182.38 = 401,460.96/x
  3. Step 3: Cross multiply
    616,695.78x = 851,182.38 × 401,460.96
  4. Step 4: Simplify right side
    616,695.78x = 341,716,495,409.89
  5. Step 5: Solve for x
    x = 341,716,495,409.89/616,695.78
  6. Step 6: Final answer
    x = 554,108.70

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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.