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Finding the Fourth Proportional to 383,586.90, 575,423.55 and 117,345.30

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Solution

The fourth proportional to 383,586.90, 575,423.55 and 117,345.30 is: 176,031.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,586.90 : 575,423.55 = 117,345.30 : x
  2. Step 2: Convert to fraction form
    383,586.90/575,423.55 = 117,345.30/x
  3. Step 3: Cross multiply
    383,586.90x = 575,423.55 × 117,345.30
  4. Step 4: Simplify right side
    383,586.90x = 67,523,249,101.82
  5. Step 5: Solve for x
    x = 67,523,249,101.82/383,586.90
  6. Step 6: Final answer
    x = 176,031.17

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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.