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Finding the Fourth Proportional to 153,920.80, 230,881.20 and 127,655.20

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Solution

The fourth proportional to 153,920.80, 230,881.20 and 127,655.20 is: 191,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,920.80 : 230,881.20 = 127,655.20 : x
  2. Step 2: Convert to fraction form
    153,920.80/230,881.20 = 127,655.20/x
  3. Step 3: Cross multiply
    153,920.80x = 230,881.20 × 127,655.20
  4. Step 4: Simplify right side
    153,920.80x = 29,473,185,762.24
  5. Step 5: Solve for x
    x = 29,473,185,762.24/153,920.80
  6. Step 6: Final answer
    x = 191,482.80

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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.