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Finding the Fourth Proportional to 66,195.04, 99,312.72 and 19,448.32

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Solution

The fourth proportional to 66,195.04, 99,312.72 and 19,448.32 is: 29,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,195.04 : 99,312.72 = 19,448.32 : x
  2. Step 2: Convert to fraction form
    66,195.04/99,312.72 = 19,448.32/x
  3. Step 3: Cross multiply
    66,195.04x = 99,312.72 × 19,448.32
  4. Step 4: Simplify right side
    66,195.04x = 1,931,465,558.63
  5. Step 5: Solve for x
    x = 1,931,465,558.63/66,195.04
  6. Step 6: Final answer
    x = 29,178.40

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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.