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Finding the Fourth Proportional to 76,602.58, 105,712.50 and 43,068.58

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Solution

The fourth proportional to 76,602.58, 105,712.50 and 43,068.58 is: 59,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,602.58 : 105,712.50 = 43,068.58 : x
  2. Step 2: Convert to fraction form
    76,602.58/105,712.50 = 43,068.58/x
  3. Step 3: Cross multiply
    76,602.58x = 105,712.50 × 43,068.58
  4. Step 4: Simplify right side
    76,602.58x = 4,552,887,263.25
  5. Step 5: Solve for x
    x = 4,552,887,263.25/76,602.58
  6. Step 6: Final answer
    x = 59,435.17

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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.