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Finding the Fourth Proportional to 319,886.76, 441,447.30 and 176,646.60

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Solution

The fourth proportional to 319,886.76, 441,447.30 and 176,646.60 is: 243,774.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,886.76 : 441,447.30 = 176,646.60 : x
  2. Step 2: Convert to fraction form
    319,886.76/441,447.30 = 176,646.60/x
  3. Step 3: Cross multiply
    319,886.76x = 441,447.30 × 176,646.60
  4. Step 4: Simplify right side
    319,886.76x = 77,980,164,624.18
  5. Step 5: Solve for x
    x = 77,980,164,624.18/319,886.76
  6. Step 6: Final answer
    x = 243,774.28

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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.