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Finding the Fourth Proportional to 153,240.64, 211,401.12 and 89,581.12

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Solution

The fourth proportional to 153,240.64, 211,401.12 and 89,581.12 is: 123,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,240.64 : 211,401.12 = 89,581.12 : x
  2. Step 2: Convert to fraction form
    153,240.64/211,401.12 = 89,581.12/x
  3. Step 3: Cross multiply
    153,240.64x = 211,401.12 × 89,581.12
  4. Step 4: Simplify right side
    153,240.64x = 18,937,549,098.85
  5. Step 5: Solve for x
    x = 18,937,549,098.85/153,240.64
  6. Step 6: Final answer
    x = 123,580.46

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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.