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Finding the Fourth Proportional to 76,200.90, 114,430.95 and 56,501.70

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Solution

The fourth proportional to 76,200.90, 114,430.95 and 56,501.70 is: 84,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,200.90 : 114,430.95 = 56,501.70 : x
  2. Step 2: Convert to fraction form
    76,200.90/114,430.95 = 56,501.70/x
  3. Step 3: Cross multiply
    76,200.90x = 114,430.95 × 56,501.70
  4. Step 4: Simplify right side
    76,200.90x = 6,465,543,207.62
  5. Step 5: Solve for x
    x = 6,465,543,207.62/76,200.90
  6. Step 6: Final answer
    x = 84,848.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.