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Finding the Fourth Proportional to 153,692.76, 212,097.62 and 86,624.76

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Solution

The fourth proportional to 153,692.76, 212,097.62 and 86,624.76 is: 119,543.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,692.76 : 212,097.62 = 86,624.76 : x
  2. Step 2: Convert to fraction form
    153,692.76/212,097.62 = 86,624.76/x
  3. Step 3: Cross multiply
    153,692.76x = 212,097.62 × 86,624.76
  4. Step 4: Simplify right side
    153,692.76x = 18,372,905,429.07
  5. Step 5: Solve for x
    x = 18,372,905,429.07/153,692.76
  6. Step 6: Final answer
    x = 119,543.08

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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.