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Finding the Fourth Proportional to 158,803.40, 238,132.20 and 70,011.20

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Solution

The fourth proportional to 158,803.40, 238,132.20 and 70,011.20 is: 104,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,803.40 : 238,132.20 = 70,011.20 : x
  2. Step 2: Convert to fraction form
    158,803.40/238,132.20 = 70,011.20/x
  3. Step 3: Cross multiply
    158,803.40x = 238,132.20 × 70,011.20
  4. Step 4: Simplify right side
    158,803.40x = 16,671,921,080.64
  5. Step 5: Solve for x
    x = 16,671,921,080.64/158,803.40
  6. Step 6: Final answer
    x = 104,984.66

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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.