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Finding the Fourth Proportional to 75,574.62, 104,300.34 and 56,421.16

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Solution

The fourth proportional to 75,574.62, 104,300.34 and 56,421.16 is: 77,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,574.62 : 104,300.34 = 56,421.16 : x
  2. Step 2: Convert to fraction form
    75,574.62/104,300.34 = 56,421.16/x
  3. Step 3: Cross multiply
    75,574.62x = 104,300.34 × 56,421.16
  4. Step 4: Simplify right side
    75,574.62x = 5,884,746,171.19
  5. Step 5: Solve for x
    x = 5,884,746,171.19/75,574.62
  6. Step 6: Final answer
    x = 77,866.70

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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.