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Finding the Fourth Proportional to 623,291.76, 859,841.94 and 408,337.20

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Solution

The fourth proportional to 623,291.76, 859,841.94 and 408,337.20 is: 563,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,291.76 : 859,841.94 = 408,337.20 : x
  2. Step 2: Convert to fraction form
    623,291.76/859,841.94 = 408,337.20/x
  3. Step 3: Cross multiply
    623,291.76x = 859,841.94 × 408,337.20
  4. Step 4: Simplify right side
    623,291.76x = 351,105,450,222.17
  5. Step 5: Solve for x
    x = 351,105,450,222.17/623,291.76
  6. Step 6: Final answer
    x = 563,308.35

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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.