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Finding the Fourth Proportional to 916,503.14, 1,264,717.14 and 553,712.60

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Solution

The fourth proportional to 916,503.14, 1,264,717.14 and 553,712.60 is: 764,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,503.14 : 1,264,717.14 = 553,712.60 : x
  2. Step 2: Convert to fraction form
    916,503.14/1,264,717.14 = 553,712.60/x
  3. Step 3: Cross multiply
    916,503.14x = 1,264,717.14 × 553,712.60
  4. Step 4: Simplify right side
    916,503.14x = 700,289,815,853.96
  5. Step 5: Solve for x
    x = 700,289,815,853.96/916,503.14
  6. Step 6: Final answer
    x = 764,088.83

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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.