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Finding the Fourth Proportional to 868,853,856.15, 1,303,280,784.23 and 868,853,856.15

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Solution

The fourth proportional to 868,853,856.15, 1,303,280,784.23 and 868,853,856.15 is: 1,303,280,784.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,853,856.15 : 1,303,280,784.23 = 868,853,856.15 : x
  2. Step 2: Convert to fraction form
    868,853,856.15/1,303,280,784.23 = 868,853,856.15/x
  3. Step 3: Cross multiply
    868,853,856.15x = 1,303,280,784.23 × 868,853,856.15
  4. Step 4: Simplify right side
    868,853,856.15x = 1,132,360,535,020,087,168
  5. Step 5: Solve for x
    x = 1,132,360,535,020,087,168/868,853,856.15
  6. Step 6: Final answer
    x = 1,303,280,784.23

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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.