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Finding the Fourth Proportional to 655,553,695.80, 983,330,543.70 and 651,727,320.60

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Solution

The fourth proportional to 655,553,695.80, 983,330,543.70 and 651,727,320.60 is: 977,590,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,553,695.80 : 983,330,543.70 = 651,727,320.60 : x
  2. Step 2: Convert to fraction form
    655,553,695.80/983,330,543.70 = 651,727,320.60/x
  3. Step 3: Cross multiply
    655,553,695.80x = 983,330,543.70 × 651,727,320.60
  4. Step 4: Simplify right side
    655,553,695.80x = 640,863,380,509,742,208
  5. Step 5: Solve for x
    x = 640,863,380,509,742,208/655,553,695.80
  6. Step 6: Final answer
    x = 977,590,980.90

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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.