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Finding the Fourth Proportional to 70,866.80, 106,300.20 and 59,807.60

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Solution

The fourth proportional to 70,866.80, 106,300.20 and 59,807.60 is: 89,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,866.80 : 106,300.20 = 59,807.60 : x
  2. Step 2: Convert to fraction form
    70,866.80/106,300.20 = 59,807.60/x
  3. Step 3: Cross multiply
    70,866.80x = 106,300.20 × 59,807.60
  4. Step 4: Simplify right side
    70,866.80x = 6,357,559,841.52
  5. Step 5: Solve for x
    x = 6,357,559,841.52/70,866.80
  6. Step 6: Final answer
    x = 89,711.40

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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.