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Finding the Fourth Proportional to 153,575.10, 211,950.80 and 85,598.28

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Solution

The fourth proportional to 153,575.10, 211,950.80 and 85,598.28 is: 118,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,575.10 : 211,950.80 = 85,598.28 : x
  2. Step 2: Convert to fraction form
    153,575.10/211,950.80 = 85,598.28/x
  3. Step 3: Cross multiply
    153,575.10x = 211,950.80 × 85,598.28
  4. Step 4: Simplify right side
    153,575.10x = 18,142,623,496.63
  5. Step 5: Solve for x
    x = 18,142,623,496.63/153,575.10
  6. Step 6: Final answer
    x = 118,135.19

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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.