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Finding the Fourth Proportional to 111,417.21, 153,753.63 and 63,018.29

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Solution

The fourth proportional to 111,417.21, 153,753.63 and 63,018.29 is: 86,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,417.21 : 153,753.63 = 63,018.29 : x
  2. Step 2: Convert to fraction form
    111,417.21/153,753.63 = 63,018.29/x
  3. Step 3: Cross multiply
    111,417.21x = 153,753.63 × 63,018.29
  4. Step 4: Simplify right side
    111,417.21x = 9,689,290,075.12
  5. Step 5: Solve for x
    x = 9,689,290,075.12/111,417.21
  6. Step 6: Final answer
    x = 86,964.03

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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.