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Finding the Fourth Proportional to 78,697,966.80, 118,046,950.20 and 24,838,280.40

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Solution

The fourth proportional to 78,697,966.80, 118,046,950.20 and 24,838,280.40 is: 37,257,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697,966.80 : 118,046,950.20 = 24,838,280.40 : x
  2. Step 2: Convert to fraction form
    78,697,966.80/118,046,950.20 = 24,838,280.40/x
  3. Step 3: Cross multiply
    78,697,966.80x = 118,046,950.20 × 24,838,280.40
  4. Step 4: Simplify right side
    78,697,966.80x = 2,932,083,249,432,436
  5. Step 5: Solve for x
    x = 2,932,083,249,432,436/78,697,966.80
  6. Step 6: Final answer
    x = 37,257,420.60

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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.