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Finding the Fourth Proportional to 724,897,319.60, 1,087,345,979.40 and 724,897,319.60

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Solution

The fourth proportional to 724,897,319.60, 1,087,345,979.40 and 724,897,319.60 is: 1,087,345,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,897,319.60 : 1,087,345,979.40 = 724,897,319.60 : x
  2. Step 2: Convert to fraction form
    724,897,319.60/1,087,345,979.40 = 724,897,319.60/x
  3. Step 3: Cross multiply
    724,897,319.60x = 1,087,345,979.40 × 724,897,319.60
  4. Step 4: Simplify right side
    724,897,319.60x = 788,214,185,944,896,896
  5. Step 5: Solve for x
    x = 788,214,185,944,896,896/724,897,319.60
  6. Step 6: Final answer
    x = 1,087,345,979.40

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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.