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Finding the Fourth Proportional to 585,526.40, 878,289.60 and 436,810.40

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Solution

The fourth proportional to 585,526.40, 878,289.60 and 436,810.40 is: 655,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,526.40 : 878,289.60 = 436,810.40 : x
  2. Step 2: Convert to fraction form
    585,526.40/878,289.60 = 436,810.40/x
  3. Step 3: Cross multiply
    585,526.40x = 878,289.60 × 436,810.40
  4. Step 4: Simplify right side
    585,526.40x = 383,646,031,491.84
  5. Step 5: Solve for x
    x = 383,646,031,491.84/585,526.40
  6. Step 6: Final answer
    x = 655,215.60

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Double scale
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Similar ratio
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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.