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Finding the Fourth Proportional to 153,590.10, 211,928.65 and 85,592.17

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Solution

The fourth proportional to 153,590.10, 211,928.65 and 85,592.17 is: 118,102.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,590.10 : 211,928.65 = 85,592.17 : x
  2. Step 2: Convert to fraction form
    153,590.10/211,928.65 = 85,592.17/x
  3. Step 3: Cross multiply
    153,590.10x = 211,928.65 × 85,592.17
  4. Step 4: Simplify right side
    153,590.10x = 18,139,433,038.67
  5. Step 5: Solve for x
    x = 18,139,433,038.67/153,590.10
  6. Step 6: Final answer
    x = 118,102.88

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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.