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Finding the Fourth Proportional to 191,390,482.80, 287,152,079.40 and 83,762,348.40

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Solution

The fourth proportional to 191,390,482.80, 287,152,079.40 and 83,762,348.40 is: 125,672,563.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,390,482.80 : 287,152,079.40 = 83,762,348.40 : x
  2. Step 2: Convert to fraction form
    191,390,482.80/287,152,079.40 = 83,762,348.40/x
  3. Step 3: Cross multiply
    191,390,482.80x = 287,152,079.40 × 83,762,348.40
  4. Step 4: Simplify right side
    191,390,482.80x = 24,052,532,518,487,264
  5. Step 5: Solve for x
    x = 24,052,532,518,487,264/191,390,482.80
  6. Step 6: Final answer
    x = 125,672,563.06

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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.