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Finding the Fourth Proportional to 93,987.81, 129,710.05 and 53,700.70

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Solution

The fourth proportional to 93,987.81, 129,710.05 and 53,700.70 is: 74,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,987.81 : 129,710.05 = 53,700.70 : x
  2. Step 2: Convert to fraction form
    93,987.81/129,710.05 = 53,700.70/x
  3. Step 3: Cross multiply
    93,987.81x = 129,710.05 × 53,700.70
  4. Step 4: Simplify right side
    93,987.81x = 6,965,520,023.51
  5. Step 5: Solve for x
    x = 6,965,520,023.51/93,987.81
  6. Step 6: Final answer
    x = 74,110.89

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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.