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Finding the Fourth Proportional to 235,591.68, 325,114.80 and 128,159.76

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Solution

The fourth proportional to 235,591.68, 325,114.80 and 128,159.76 is: 176,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,591.68 : 325,114.80 = 128,159.76 : x
  2. Step 2: Convert to fraction form
    235,591.68/325,114.80 = 128,159.76/x
  3. Step 3: Cross multiply
    235,591.68x = 325,114.80 × 128,159.76
  4. Step 4: Simplify right side
    235,591.68x = 41,666,634,740.45
  5. Step 5: Solve for x
    x = 41,666,634,740.45/235,591.68
  6. Step 6: Final answer
    x = 176,859.53

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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.