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Finding the Fourth Proportional to 283,394.64, 391,085.04 and 156,070.32

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Solution

The fourth proportional to 283,394.64, 391,085.04 and 156,070.32 is: 215,377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,394.64 : 391,085.04 = 156,070.32 : x
  2. Step 2: Convert to fraction form
    283,394.64/391,085.04 = 156,070.32/x
  3. Step 3: Cross multiply
    283,394.64x = 391,085.04 × 156,070.32
  4. Step 4: Simplify right side
    283,394.64x = 61,036,767,340.01
  5. Step 5: Solve for x
    x = 61,036,767,340.01/283,394.64
  6. Step 6: Final answer
    x = 215,377.28

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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.