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Finding the Fourth Proportional to 113,692.30, 170,210.40 and 100,570.30

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Solution

The fourth proportional to 113,692.30, 170,210.40 and 100,570.30 is: 150,565.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,692.30 : 170,210.40 = 100,570.30 : x
  2. Step 2: Convert to fraction form
    113,692.30/170,210.40 = 100,570.30/x
  3. Step 3: Cross multiply
    113,692.30x = 170,210.40 × 100,570.30
  4. Step 4: Simplify right side
    113,692.30x = 17,118,110,991.12
  5. Step 5: Solve for x
    x = 17,118,110,991.12/113,692.30
  6. Step 6: Final answer
    x = 150,565.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.