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Finding the Fourth Proportional to 935,793,085.60, 1,406,712,937.20 and 863,233,674.40

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Solution

The fourth proportional to 935,793,085.60, 1,406,712,937.20 and 863,233,674.40 is: 1,297,639,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,793,085.60 : 1,406,712,937.20 = 863,233,674.40 : x
  2. Step 2: Convert to fraction form
    935,793,085.60/1,406,712,937.20 = 863,233,674.40/x
  3. Step 3: Cross multiply
    935,793,085.60x = 1,406,712,937.20 × 863,233,674.40
  4. Step 4: Simplify right side
    935,793,085.60x = 1,214,321,977,605,172,480
  5. Step 5: Solve for x
    x = 1,214,321,977,605,172,480/935,793,085.60
  6. Step 6: Final answer
    x = 1,297,639,399.45

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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.