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Finding the Fourth Proportional to 153,253.41, 211,484.40 and 84,336.45

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Solution

The fourth proportional to 153,253.41, 211,484.40 and 84,336.45 is: 116,381.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,253.41 : 211,484.40 = 84,336.45 : x
  2. Step 2: Convert to fraction form
    153,253.41/211,484.40 = 84,336.45/x
  3. Step 3: Cross multiply
    153,253.41x = 211,484.40 × 84,336.45
  4. Step 4: Simplify right side
    153,253.41x = 17,835,843,526.38
  5. Step 5: Solve for x
    x = 17,835,843,526.38/153,253.41
  6. Step 6: Final answer
    x = 116,381.38

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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.