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Finding the Fourth Proportional to 153,776.05, 212,217.10 and 85,798.96

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Solution

The fourth proportional to 153,776.05, 212,217.10 and 85,798.96 is: 118,406.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,776.05 : 212,217.10 = 85,798.96 : x
  2. Step 2: Convert to fraction form
    153,776.05/212,217.10 = 85,798.96/x
  3. Step 3: Cross multiply
    153,776.05x = 212,217.10 × 85,798.96
  4. Step 4: Simplify right side
    153,776.05x = 18,208,006,653.83
  5. Step 5: Solve for x
    x = 18,208,006,653.83/153,776.05
  6. Step 6: Final answer
    x = 118,406.00

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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.