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Finding the Fourth Proportional to 129,547.91, 178,773.72 and 70,611.89

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Solution

The fourth proportional to 129,547.91, 178,773.72 and 70,611.89 is: 97,443.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,547.91 : 178,773.72 = 70,611.89 : x
  2. Step 2: Convert to fraction form
    129,547.91/178,773.72 = 70,611.89/x
  3. Step 3: Cross multiply
    129,547.91x = 178,773.72 × 70,611.89
  4. Step 4: Simplify right side
    129,547.91x = 12,623,549,357.66
  5. Step 5: Solve for x
    x = 12,623,549,357.66/129,547.91
  6. Step 6: Final answer
    x = 97,443.09

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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.