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Finding the Fourth Proportional to 153,622.59, 211,817.84 and 105,247.71

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Solution

The fourth proportional to 153,622.59, 211,817.84 and 105,247.71 is: 145,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,622.59 : 211,817.84 = 105,247.71 : x
  2. Step 2: Convert to fraction form
    153,622.59/211,817.84 = 105,247.71/x
  3. Step 3: Cross multiply
    153,622.59x = 211,817.84 × 105,247.71
  4. Step 4: Simplify right side
    153,622.59x = 22,293,342,070.91
  5. Step 5: Solve for x
    x = 22,293,342,070.91/153,622.59
  6. Step 6: Final answer
    x = 145,117.60

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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.