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Finding the Fourth Proportional to 61,316.80, 84,611.95 and 34,457.20

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Solution

The fourth proportional to 61,316.80, 84,611.95 and 34,457.20 is: 47,547.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,316.80 : 84,611.95 = 34,457.20 : x
  2. Step 2: Convert to fraction form
    61,316.80/84,611.95 = 34,457.20/x
  3. Step 3: Cross multiply
    61,316.80x = 84,611.95 × 34,457.20
  4. Step 4: Simplify right side
    61,316.80x = 2,915,490,883.54
  5. Step 5: Solve for x
    x = 2,915,490,883.54/61,316.80
  6. Step 6: Final answer
    x = 47,547.99

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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.